diff --git a/doc/How to build - Linux et al.md b/doc/How to build - Linux et al.md
index cf7bc86f2..14ec23b2d 100644
--- a/doc/How to build - Linux et al.md	
+++ b/doc/How to build - Linux et al.md	
@@ -58,11 +58,20 @@ Note that Slic3r PE is tested with wxWidgets 3.0 somewhat sporadically and so th
 
 ### Build variant
 
-By default Scli3r builds the release variant.
+By default Slic3r builds the release variant.
 To create a debug build, use the following CMake flag:
 
     -DCMAKE_BUILD_TYPE=Debug
 
+### Enabling address sanitizer
+
+If you're using GCC/Clang compiler, it is possible to build Slic3r with the built-in address sanitizer enabled to help detect memory-corruption issues.
+To enable it, simply use the following CMake flag:
+
+    -DSLIC3R_ASAN=1
+
+This requires GCC>4.8 or Clang>3.1.
+
 ### Installation
 
 At runtime, Slic3r needs a way to access its resource files. By default, it looks for a `resources` directory relative to its binary.
diff --git a/src/slic3r/GUI/3DScene.cpp b/src/slic3r/GUI/3DScene.cpp
index deb2bb08d..419f1baae 100644
--- a/src/slic3r/GUI/3DScene.cpp
+++ b/src/slic3r/GUI/3DScene.cpp
@@ -249,6 +249,7 @@ GLVolume::GLVolume(float r, float g, float b, float a)
     , is_wipe_tower(false)
     , is_extrusion_path(false)
     , force_transparent(false)
+    , force_native_color(false)
     , tverts_range(0, size_t(-1))
     , qverts_range(0, size_t(-1))
 {
@@ -280,16 +281,20 @@ void GLVolume::set_render_color(const float* rgba, unsigned int size)
 
 void GLVolume::set_render_color()
 {
-    if (selected)
-        set_render_color(is_outside ? SELECTED_OUTSIDE_COLOR : SELECTED_COLOR, 4);
-    else if (hover)
-        set_render_color(HOVER_COLOR, 4);
-    else if (disabled)
-        set_render_color(DISABLED_COLOR, 4);
-    else if (is_outside && shader_outside_printer_detection_enabled)
-        set_render_color(OUTSIDE_COLOR, 4);
-    else
+    if (force_native_color)
         set_render_color(color, 4);
+    else {
+        if (selected)
+            set_render_color(is_outside ? SELECTED_OUTSIDE_COLOR : SELECTED_COLOR, 4);
+        else if (hover)
+            set_render_color(HOVER_COLOR, 4);
+        else if (disabled)
+            set_render_color(DISABLED_COLOR, 4);
+        else if (is_outside && shader_outside_printer_detection_enabled)
+            set_render_color(OUTSIDE_COLOR, 4);
+        else
+            set_render_color(color, 4);
+    }
 
     if (force_transparent)
         render_color[3] = color[3];
diff --git a/src/slic3r/GUI/3DScene.hpp b/src/slic3r/GUI/3DScene.hpp
index 15ac6a3a1..d571f862f 100644
--- a/src/slic3r/GUI/3DScene.hpp
+++ b/src/slic3r/GUI/3DScene.hpp
@@ -302,6 +302,8 @@ public:
     bool                is_extrusion_path;
     // Wheter or not to always render this volume using its own alpha 
     bool                force_transparent;
+    // Whether or not always use the volume's own color (not using SELECTED/HOVER/DISABLED/OUTSIDE)
+    bool                force_native_color;
 
     // Interleaved triangles & normals with indexed triangles & quads.
     GLIndexedVertexArray        indexed_vertex_array;
diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index 06a36866d..bf0e1785a 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -1300,8 +1300,10 @@ void GLCanvas3D::toggle_model_objects_visibility(bool visible, const ModelObject
 {
     for (GLVolume* vol : m_volumes.volumes) {
         if ((mo == nullptr || m_model->objects[vol->composite_id.object_id] == mo)
-        && (instance_idx == -1 || vol->composite_id.instance_id == instance_idx))
+        && (instance_idx == -1 || vol->composite_id.instance_id == instance_idx)) {
             vol->is_active = visible;
+            vol->force_native_color = (instance_idx != -1);
+        }
     }
     if (visible && !mo)
         toggle_sla_auxiliaries_visibility(true);
@@ -2169,7 +2171,7 @@ void GLCanvas3D::on_char(wxKeyEvent& evt)
         case 'a':
         case 'A':
         case WXK_CONTROL_A:
-            if (m_gizmos.get_current_type() == GLGizmosManager::SlaSupports && m_gizmos.mouse_event(SLAGizmoEventType::SelectAll)) // Sla gizmo selects all support points
+            if (m_gizmos.get_current_type() == GLGizmosManager::SlaSupports && m_gizmos.gizmo_event(SLAGizmoEventType::SelectAll)) // Sla gizmo selects all support points
                 m_dirty = true;
             else
                 post_event(SimpleEvent(EVT_GLCANVAS_SELECT_ALL));
@@ -2189,14 +2191,14 @@ void GLCanvas3D::on_char(wxKeyEvent& evt)
         {
         // key ESC
         case WXK_ESCAPE: {
-            if (m_gizmos.get_current_type() != GLGizmosManager::SlaSupports || !m_gizmos.mouse_event(SLAGizmoEventType::DiscardChanges))
+            if (m_gizmos.get_current_type() != GLGizmosManager::SlaSupports || !m_gizmos.gizmo_event(SLAGizmoEventType::DiscardChanges))
                 m_gizmos.reset_all_states();
             m_dirty = true;
             break;
         }
 
         case WXK_RETURN: {
-            if (m_gizmos.get_current_type() == GLGizmosManager::SlaSupports && m_gizmos.mouse_event(SLAGizmoEventType::ApplyChanges))
+            if (m_gizmos.get_current_type() == GLGizmosManager::SlaSupports && m_gizmos.gizmo_event(SLAGizmoEventType::ApplyChanges))
                 m_dirty = true;
             break;
         }
@@ -2206,7 +2208,7 @@ void GLCanvas3D::on_char(wxKeyEvent& evt)
 #else /* __APPLE__ */
 		case WXK_DELETE:
 #endif /* __APPLE__ */
-                  if (m_gizmos.get_current_type() == GLGizmosManager::SlaSupports && m_gizmos.mouse_event(SLAGizmoEventType::Delete))
+                  if (m_gizmos.get_current_type() == GLGizmosManager::SlaSupports && m_gizmos.gizmo_event(SLAGizmoEventType::Delete))
                         m_dirty = true;
                   else
                       post_event(SimpleEvent(EVT_GLTOOLBAR_DELETE));
@@ -2225,7 +2227,7 @@ void GLCanvas3D::on_char(wxKeyEvent& evt)
         case 'A':
         case 'a': {
             if (m_gizmos.get_current_type() == GLGizmosManager::SlaSupports) {
-                if (m_gizmos.mouse_event(SLAGizmoEventType::AutomaticGeneration))
+                if (m_gizmos.gizmo_event(SLAGizmoEventType::AutomaticGeneration))
                     m_dirty = true;
             }
             else
@@ -2242,7 +2244,7 @@ void GLCanvas3D::on_char(wxKeyEvent& evt)
         case 'z': { m_selection.is_empty() ? zoom_to_volumes() : zoom_to_selection(); break; }
         case 'M':
         case 'm': {
-            if (m_gizmos.get_current_type() == GLGizmosManager::SlaSupports && m_gizmos.mouse_event(SLAGizmoEventType::ManualEditing)) {
+            if (m_gizmos.get_current_type() == GLGizmosManager::SlaSupports && m_gizmos.gizmo_event(SLAGizmoEventType::ManualEditing)) {
                 m_dirty = true;
                 break;
             }
@@ -2276,7 +2278,7 @@ void GLCanvas3D::on_key(wxKeyEvent& evt)
             // Enable switching between 3D and Preview with Tab
             // m_canvas->HandleAsNavigationKey(evt);   // XXX: Doesn't work in some cases / on Linux
             post_event(SimpleEvent(EVT_GLCANVAS_TAB));
-        } else if (m_gizmos.get_current_type() == GLGizmosManager::SlaSupports && keyCode == WXK_SHIFT && m_gizmos.mouse_event(SLAGizmoEventType::ShiftUp)) {
+        } else if (m_gizmos.get_current_type() == GLGizmosManager::SlaSupports && keyCode == WXK_SHIFT && m_gizmos.gizmo_event(SLAGizmoEventType::ShiftUp)) {
             // shift has been just released - SLA gizmo might want to close rectangular selection.
             m_dirty = true;
         }
@@ -2512,10 +2514,6 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
             _update_gizmos_data();
             m_dirty = true;
         }
-        else if (evt.LeftDown() && m_gizmos.get_current_type() == GLGizmosManager::SlaSupports && evt.ShiftDown() && m_gizmos.mouse_event(SLAGizmoEventType::LeftDown, Vec2d(pos(0), pos(1)), evt.ShiftDown()))
-        {
-            // the gizmo got the event and took some action, there is no need to do anything more
-        }
         else if (evt.LeftDown() && !m_selection.is_empty() && m_gizmos.grabber_contains_mouse())
         {
             _update_gizmos_data();
@@ -2531,7 +2529,11 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
 
             m_dirty = true;
         }
-        else if ((selected_object_idx != -1) && evt.RightDown() && m_gizmos.get_current_type() == GLGizmosManager::SlaSupports && m_gizmos.mouse_event(SLAGizmoEventType::RightDown))
+        else if (evt.LeftDown() && m_gizmos.get_current_type() == GLGizmosManager::SlaSupports && m_gizmos.gizmo_event(SLAGizmoEventType::LeftDown, Vec2d(pos(0), pos(1)), evt.ShiftDown()))
+        {
+            // the gizmo got the event and took some action, there is no need to do anything more
+        }
+        else if ((selected_object_idx != -1) && evt.RightDown() && m_gizmos.get_current_type() == GLGizmosManager::SlaSupports && m_gizmos.gizmo_event(SLAGizmoEventType::RightDown))
         {
             // event was taken care of by the SlaSupports gizmo
         }
@@ -2688,7 +2690,7 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
 
         m_dirty = true;
     }
-    else if (evt.Dragging() && m_gizmos.get_current_type() == GLGizmosManager::SlaSupports && evt.ShiftDown() && m_gizmos.mouse_event(SLAGizmoEventType::Dragging, Vec2d(pos(0), pos(1)), evt.ShiftDown()))
+    else if (evt.Dragging() && m_gizmos.get_current_type() == GLGizmosManager::SlaSupports && m_gizmos.gizmo_event(SLAGizmoEventType::Dragging, Vec2d(pos(0), pos(1)), evt.ShiftDown()))
     {
         // the gizmo got the event and took some action, no need to do anything more here
         m_dirty = true;
@@ -2741,11 +2743,13 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
             m_layers_editing.accept_changes(*this);
         }
         else if (evt.LeftUp() && m_gizmos.get_current_type() == GLGizmosManager::SlaSupports && !m_gizmos.is_dragging()
-            && !m_mouse.dragging && m_gizmos.mouse_event(SLAGizmoEventType::LeftUp, Vec2d(pos(0), pos(1)), evt.ShiftDown()))
+              && !m_mouse.dragging)
         {
-            // the gizmo got the event and took some action, no need to do anything more
+            // in case SLA gizmo is selected, we just pass the LeftUp event and stop processing - neither
+            // object moving or selecting is suppressed in that case
+            m_gizmos.gizmo_event(SLAGizmoEventType::LeftUp, Vec2d(pos(0), pos(1)), evt.ShiftDown());
         }
-        else if ((m_mouse.drag.move_volume_idx != -1) && m_mouse.dragging && m_gizmos.get_current_type() != GLGizmosManager::SlaSupports)
+        else if ((m_mouse.drag.move_volume_idx != -1) && m_mouse.dragging)
         {
             m_regenerate_volumes = false;
             do_move();
@@ -2755,11 +2759,8 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
             post_event(SimpleEvent(EVT_GLCANVAS_MOUSE_DRAGGING_FINISHED));
         }
         else if (evt.LeftUp() && !m_mouse.dragging && (m_hover_volume_id == -1) && !gizmos_overlay_contains_mouse && !m_gizmos.is_dragging()
-            && !is_layers_editing_enabled() && (m_gizmos.get_current_type() != GLGizmosManager::SlaSupports || !m_gizmos.mouse_event(SLAGizmoEventType::LeftUp, Vec2d(pos(0), pos(1)), evt.ShiftDown())))
+              && !is_layers_editing_enabled())
         {
-            // SLA gizmo cannot be deselected by clicking in canvas area to avoid inadvertent unselection and losing manual changes
-            // that's why the mouse_event function was called so that the gizmo can refuse the deselection in manual editing mode
-
             // deselect and propagate event through callback
             if (!evt.ShiftDown() && m_picking_enabled && !m_mouse.ignore_up_event)
             {
diff --git a/src/slic3r/GUI/GLToolbar.cpp b/src/slic3r/GUI/GLToolbar.cpp
index 5ac5bf92f..ac79784ad 100644
--- a/src/slic3r/GUI/GLToolbar.cpp
+++ b/src/slic3r/GUI/GLToolbar.cpp
@@ -157,7 +157,7 @@ GLToolbar::GLToolbar(GLToolbar::EType type)
 #if ENABLE_SVG_ICONS
     , m_icons_texture_dirty(true)
 #endif // ENABLE_SVG_ICONS
-    , m_mouse_capture({false, false, false})
+    , m_mouse_capture({ false, false, false, nullptr })
     , m_tooltip("")
 {
 }
@@ -418,8 +418,17 @@ bool GLToolbar::on_mouse(wxMouseEvent& evt, GLCanvas3D& parent)
         m_mouse_capture.middle = false;
     else if (evt.RightUp())
         m_mouse_capture.right = false;
-    else if (m_mouse_capture.any() && evt.Dragging())
-        processed = true;
+    else if (m_mouse_capture.any())
+    {
+        if (evt.Dragging())
+            processed = true;
+        else if (evt.Entering() && (m_mouse_capture.parent == &parent))
+            // Resets the mouse capture state to avoid setting the dragging event as processed when, for example,
+            // the item action opens a modal dialog
+            // Keeps the mouse capture state if the entering event happens on different parent from the one
+            // who received the button down event, to prevent, for example, dragging when switching between scene views 
+            m_mouse_capture.reset();
+    }
 
     int item_id = contains_mouse(mouse_pos, parent);
     if (item_id == -1)
@@ -429,10 +438,11 @@ bool GLToolbar::on_mouse(wxMouseEvent& evt, GLCanvas3D& parent)
     }
     else
     {
-        // mouse inside toolbar only
+        // mouse inside toolbar
         if (evt.LeftDown() || evt.LeftDClick())
         {
             m_mouse_capture.left = true;
+            m_mouse_capture.parent = &parent;
             if ((item_id != -2) && !m_items[item_id]->is_separator())
             {
                 // mouse is inside an icon
@@ -441,9 +451,15 @@ bool GLToolbar::on_mouse(wxMouseEvent& evt, GLCanvas3D& parent)
             }
         }
         else if (evt.MiddleDown())
+        {
             m_mouse_capture.middle = true;
+            m_mouse_capture.parent = &parent;
+        }
         else if (evt.RightDown())
+        {
             m_mouse_capture.right = true;
+            m_mouse_capture.parent = &parent;
+        }
         else if (evt.LeftUp())
             processed = true;
     }
diff --git a/src/slic3r/GUI/GLToolbar.hpp b/src/slic3r/GUI/GLToolbar.hpp
index c7b018cfd..5fe96df5f 100644
--- a/src/slic3r/GUI/GLToolbar.hpp
+++ b/src/slic3r/GUI/GLToolbar.hpp
@@ -237,8 +237,10 @@ private:
         bool left;
         bool middle;
         bool right;
+        GLCanvas3D* parent;
 
         bool any() const { return left || middle || right; }
+        void reset() { left = middle = right = false; parent = nullptr; }
     };
 
     MouseCapture m_mouse_capture;
diff --git a/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp b/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp
index 8ac2405ec..e62a116a7 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp
@@ -202,12 +202,12 @@ void GLGizmoSlaSupports::render_points(const Selection& selection, bool picking)
             const float cone_height = 0.75f;
             ::glPushMatrix();
             ::glTranslatef(0.f, 0.f, m_editing_mode_cache[i].support_point.head_front_radius * RenderPointScale);
-            ::gluCylinder(m_quadric, 0.f, cone_radius, cone_height, 36, 1);
+            ::gluCylinder(m_quadric, 0.f, cone_radius, cone_height, 24, 1);
             ::glTranslatef(0.f, 0.f, cone_height);
-            ::gluDisk(m_quadric, 0.0, cone_radius, 36, 1);
+            ::gluDisk(m_quadric, 0.0, cone_radius, 24, 1);
             ::glPopMatrix();
         }
-        ::gluSphere(m_quadric, m_editing_mode_cache[i].support_point.head_front_radius * RenderPointScale, 64, 36);
+        ::gluSphere(m_quadric, m_editing_mode_cache[i].support_point.head_front_radius * RenderPointScale, 24, 12);
         ::glPopMatrix();
     }
 
@@ -308,7 +308,7 @@ std::pair<Vec3f, Vec3f> GLGizmoSlaSupports::unproject_on_mesh(const Vec2d& mouse
 // The gizmo has an opportunity to react - if it does, it should return true so that the Canvas3D is
 // aware that the event was reacted to and stops trying to make different sense of it. If the gizmo
 // concludes that the event was not intended for it, it should return false.
-bool GLGizmoSlaSupports::mouse_event(SLAGizmoEventType action, const Vec2d& mouse_position, bool shift_down)
+bool GLGizmoSlaSupports::gizmo_event(SLAGizmoEventType action, const Vec2d& mouse_position, bool shift_down)
 {
     if (m_editing_mode) {
 
@@ -327,39 +327,19 @@ bool GLGizmoSlaSupports::mouse_event(SLAGizmoEventType action, const Vec2d& mous
             return true;
         }
 
-        // dragging the selection rectangle:
-        if (action == SLAGizmoEventType::Dragging && m_selection_rectangle_active) {
-            m_selection_rectangle_end_corner = mouse_position;
-            return true;
-        }
-
-        // mouse up without selection rectangle - place point on the mesh:
-        if (action == SLAGizmoEventType::LeftUp && !m_selection_rectangle_active && !shift_down) {
-            if (m_ignore_up_event) {
-                m_ignore_up_event = false;
-                return false;
-            }
-
-            int instance_id = m_parent.get_selection().get_instance_idx();
-            if (m_old_instance_id != instance_id)
-            {
-                bool something_selected = (m_old_instance_id != -1);
-                m_old_instance_id = instance_id;
-                if (something_selected)
-                    return false;
-            }
-            if (instance_id == -1)
-                return false;
-
+        // left down without selection rectangle - place point on the mesh:
+        if (action == SLAGizmoEventType::LeftDown && !m_selection_rectangle_active && !shift_down) {
             // If there is some selection, don't add new point and deselect everything instead.
             if (m_selection_empty) {
                 try {
                     std::pair<Vec3f, Vec3f> pos_and_normal = unproject_on_mesh(mouse_position); // don't create anything if this throws
                     m_editing_mode_cache.emplace_back(sla::SupportPoint(pos_and_normal.first, m_new_point_head_diameter/2.f, false), false, pos_and_normal.second);
                     m_unsaved_changes = true;
+                    m_parent.set_as_dirty();
+                    m_wait_for_up_event = true;
                 }
-                catch (...) {      // not clicked on object
-                    return true;   // prevents deselection of the gizmo by GLCanvas3D
+                catch (...) {   // not clicked on object
+                    return false;
                 }
             }
             else
@@ -369,10 +349,7 @@ bool GLGizmoSlaSupports::mouse_event(SLAGizmoEventType action, const Vec2d& mous
         }
 
         // left up with selection rectangle - select points inside the rectangle:
-        if ((action == SLAGizmoEventType::LeftUp || action == SLAGizmoEventType::ShiftUp)
-          && m_selection_rectangle_active) {
-            if (action == SLAGizmoEventType::ShiftUp)
-                m_ignore_up_event = true;
+        if ((action == SLAGizmoEventType::LeftUp || action == SLAGizmoEventType::ShiftUp) && m_selection_rectangle_active) {
             const Transform3d& instance_matrix = m_model_object->instances[m_active_instance]->get_transformation().get_matrix();
             GLint viewport[4];
             ::glGetIntegerv(GL_VIEWPORT, viewport);
@@ -422,6 +399,28 @@ bool GLGizmoSlaSupports::mouse_event(SLAGizmoEventType action, const Vec2d& mous
             return true;
         }
 
+        // left up with no selection rectangle
+        if (action == SLAGizmoEventType::LeftUp) {
+            if (m_wait_for_up_event) {
+                m_wait_for_up_event = false;
+                return true;
+            }
+        }
+
+        // dragging the selection rectangle:
+        if (action == SLAGizmoEventType::Dragging) {
+            if (m_wait_for_up_event)
+                return true; // point has been placed and the button not released yet
+                             // this prevents GLCanvas from starting scene rotation
+
+            if (m_selection_rectangle_active)  {
+                m_selection_rectangle_end_corner = mouse_position;
+                return true;
+            }
+
+            return false;
+        }
+
         if (action == SLAGizmoEventType::Delete) {
             // delete key pressed
             delete_selected_points();
@@ -693,10 +692,10 @@ bool GLGizmoSlaSupports::on_is_activable(const Selection& selection) const
         || !selection.is_from_single_instance())
             return false;
 
-    // Check that none of the selected volumes is outside.
+    // Check that none of the selected volumes is outside. Only SLA auxiliaries (supports) are allowed outside.
     const Selection::IndicesList& list = selection.get_volume_idxs();
     for (const auto& idx : list)
-        if (selection.get_volume(idx)->is_outside)
+        if (selection.get_volume(idx)->is_outside && selection.get_volume(idx)->composite_id.volume_id >= 0)
             return false;
 
     return true;
diff --git a/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.hpp b/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.hpp
index 8edfbe2cb..a0428cc41 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.hpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.hpp
@@ -60,7 +60,7 @@ public:
 #endif // ENABLE_SVG_ICONS
     virtual ~GLGizmoSlaSupports();
     void set_sla_support_data(ModelObject* model_object, const Selection& selection);
-    bool mouse_event(SLAGizmoEventType action, const Vec2d& mouse_position, bool shift_down);
+    bool gizmo_event(SLAGizmoEventType action, const Vec2d& mouse_position, bool shift_down);
     void delete_selected_points(bool force = false);
     std::pair<float, float> get_sla_clipping_plane() const;
 
@@ -88,8 +88,7 @@ private:
     bool m_selection_rectangle_active = false;
     Vec2d m_selection_rectangle_start_corner;
     Vec2d m_selection_rectangle_end_corner;
-    bool m_ignore_up_event = false;
-    bool m_combo_box_open = false;  // To ensure proper rendering of the imgui combobox.
+    bool m_wait_for_up_event = false;
     bool m_unsaved_changes = false; // Are there unsaved changes in manual mode?
     bool m_selection_empty = true;
     EState m_old_state = Off; // to be able to see that the gizmo has just been closed (see on_set_state)
diff --git a/src/slic3r/GUI/Gizmos/GLGizmosManager.cpp b/src/slic3r/GUI/Gizmos/GLGizmosManager.cpp
index 0a7cacd30..89668162e 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmosManager.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmosManager.cpp
@@ -562,14 +562,14 @@ void GLGizmosManager::set_sla_support_data(ModelObject* model_object, const Sele
 }
 
 // Returns true if the gizmo used the event to do something, false otherwise.
-bool GLGizmosManager::mouse_event(SLAGizmoEventType action, const Vec2d& mouse_position, bool shift_down)
+bool GLGizmosManager::gizmo_event(SLAGizmoEventType action, const Vec2d& mouse_position, bool shift_down)
 {
     if (!m_enabled)
         return false;
 
     GizmosMap::const_iterator it = m_gizmos.find(SlaSupports);
     if (it != m_gizmos.end())
-        return reinterpret_cast<GLGizmoSlaSupports*>(it->second)->mouse_event(action, mouse_position, shift_down);
+        return reinterpret_cast<GLGizmoSlaSupports*>(it->second)->gizmo_event(action, mouse_position, shift_down);
 
     return false;
 }
diff --git a/src/slic3r/GUI/Gizmos/GLGizmosManager.hpp b/src/slic3r/GUI/Gizmos/GLGizmosManager.hpp
index 355ef1247..cb121352a 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmosManager.hpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmosManager.hpp
@@ -131,8 +131,7 @@ public:
     void set_flattening_data(const ModelObject* model_object);
 
     void set_sla_support_data(ModelObject* model_object, const Selection& selection);
-    bool mouse_event(SLAGizmoEventType action, const Vec2d& mouse_position = Vec2d::Zero(), bool shift_down = false);
-    void delete_current_grabber(bool delete_all = false);
+    bool gizmo_event(SLAGizmoEventType action, const Vec2d& mouse_position = Vec2d::Zero(), bool shift_down = false);
 
     void render_current_gizmo(const Selection& selection) const;
     void render_current_gizmo_for_picking_pass(const Selection& selection) const;
diff --git a/src/slic3r/GUI/ProgressStatusBar.cpp b/src/slic3r/GUI/ProgressStatusBar.cpp
index 8cdb53c9d..83c5e5b24 100644
--- a/src/slic3r/GUI/ProgressStatusBar.cpp
+++ b/src/slic3r/GUI/ProgressStatusBar.cpp
@@ -5,8 +5,11 @@
 #include <wx/button.h>
 #include <wx/statusbr.h>
 #include <wx/frame.h>
+
 #include "GUI_App.hpp"
 
+#include "I18N.hpp"
+
 #include <iostream>
 
 namespace Slic3r {
@@ -22,7 +25,7 @@ ProgressStatusBar::ProgressStatusBar(wxWindow *parent, int id):
                        wxDefaultSize)),
     m_cancelbutton(new wxButton(self,
                                -1,
-                               "Cancel",
+                               _(L("Cancel")),
                                wxDefaultPosition,
                                wxDefaultSize))
 {
@@ -33,6 +36,9 @@ ProgressStatusBar::ProgressStatusBar(wxWindow *parent, int id):
     int w[] = {-1, 150, 155};
     self->SetStatusWidths(3, w);
 
+    wxSize s = m_cancelbutton->GetTextExtent(m_cancelbutton->GetLabel());
+    self->SetMinHeight(int(2 * self->GetBorderY() + 1.2 * s.GetHeight()));
+
     self->Bind(wxEVT_TIMER, [this](const wxTimerEvent&) {
         if (m_prog->IsShown()) m_timer->Stop();
         if(is_busy()) m_prog->Pulse();