diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index dd80b9948..c55d64b47 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -2662,19 +2662,6 @@ std::string format_mouse_event_debug_message(const wxMouseEvent &evt)
 
 void GLCanvas3D::on_mouse(wxMouseEvent& evt)
 {
-    auto mouse_up_cleanup = [this](){
-        m_moving = false;
-        m_mouse.drag.move_volume_idx = -1;
-        m_mouse.set_start_position_3D_as_invalid();
-        m_mouse.set_start_position_2D_as_invalid();
-        m_mouse.dragging = false;
-        m_mouse.ignore_left_up = false;
-        m_dirty = true;
-
-        if (m_canvas->HasCapture())
-            m_canvas->ReleaseMouse();
-    };
-
 #if ENABLE_RETINA_GL
     const float scale = m_retina_helper->get_scale_factor();
     evt.SetX(evt.GetX() * scale);
@@ -3511,6 +3498,20 @@ void GLCanvas3D::export_toolpaths_to_obj(const char* filename) const
     m_volumes.export_toolpaths_to_obj(filename);
 }
 
+void GLCanvas3D::mouse_up_cleanup()
+{
+    m_moving = false;
+    m_mouse.drag.move_volume_idx = -1;
+    m_mouse.set_start_position_3D_as_invalid();
+    m_mouse.set_start_position_2D_as_invalid();
+    m_mouse.dragging = false;
+    m_mouse.ignore_left_up = false;
+    m_dirty = true;
+
+    if (m_canvas->HasCapture())
+        m_canvas->ReleaseMouse();
+}
+
 bool GLCanvas3D::_is_shown_on_screen() const
 {
     return (m_canvas != nullptr) ? m_canvas->IsShownOnScreen() : false;
diff --git a/src/slic3r/GUI/GLCanvas3D.hpp b/src/slic3r/GUI/GLCanvas3D.hpp
index fb767360c..2c2676ae7 100644
--- a/src/slic3r/GUI/GLCanvas3D.hpp
+++ b/src/slic3r/GUI/GLCanvas3D.hpp
@@ -624,6 +624,8 @@ public:
     bool has_toolpaths_to_export() const;
     void export_toolpaths_to_obj(const char* filename) const;
 
+    void mouse_up_cleanup();
+
 private:
     bool _is_shown_on_screen() const;
 
diff --git a/src/slic3r/GUI/GUI_ObjectList.cpp b/src/slic3r/GUI/GUI_ObjectList.cpp
index 879ebc752..a5317b8a6 100644
--- a/src/slic3r/GUI/GUI_ObjectList.cpp
+++ b/src/slic3r/GUI/GUI_ObjectList.cpp
@@ -778,7 +778,13 @@ void ObjectList::OnChar(wxKeyEvent& event)
 
 void ObjectList::OnContextMenu(wxDataViewEvent&)
 {
-    list_manipulation(true);
+    // Do not show the context menu if the user pressed the right mouse button on the 3D scene and released it on the objects list
+    GLCanvas3D* canvas = wxGetApp().plater()->canvas3D();
+    bool evt_context_menu = (canvas != nullptr) ? !canvas->is_mouse_dragging() : true;
+    if (!evt_context_menu)
+        canvas->mouse_up_cleanup();
+
+    list_manipulation(evt_context_menu);
 }
 
 void ObjectList::list_manipulation(bool evt_context_menu/* = false*/)
diff --git a/src/slic3r/GUI/GUI_ObjectManipulation.hpp b/src/slic3r/GUI/GUI_ObjectManipulation.hpp
index 7d53034b2..e6f99ab2a 100644
--- a/src/slic3r/GUI/GUI_ObjectManipulation.hpp
+++ b/src/slic3r/GUI/GUI_ObjectManipulation.hpp
@@ -118,7 +118,7 @@ class ObjectManipulation : public OG_Settings
     wxStaticBitmap* m_fix_throught_netfab_bitmap;
 
 #ifndef __APPLE__
-    // Currently focused option name (empty if none)
+    // Currently focused editor (nullptr if none)
     ManipulationEditor* m_focused_editor {nullptr};
 #endif // __APPLE__
 
@@ -161,7 +161,11 @@ public:
     void update_warning_icon_state(const wxString& tooltip);
     void msw_rescale();
     void on_change(const std::string& opt_key, int axis, double new_value);
-    void set_focused_editor(ManipulationEditor* focused_editor) { m_focused_editor = focused_editor; }
+    void set_focused_editor(ManipulationEditor* focused_editor) {
+#ifndef __APPLE__
+        m_focused_editor = focused_editor;
+#endif // __APPLE__        
+    }
 
 private:
     void reset_settings_value();
diff --git a/src/slic3r/GUI/wxExtensions.cpp b/src/slic3r/GUI/wxExtensions.cpp
index 087519c2c..1cf425334 100644
--- a/src/slic3r/GUI/wxExtensions.cpp
+++ b/src/slic3r/GUI/wxExtensions.cpp
@@ -579,6 +579,9 @@ void ObjectDataViewModelNode::set_action_and_extruder_icons()
                          m_type & (itVolume | itLayer)  ? "cog" : /*m_type & itInstance*/ "set_separate_obj";
     m_action_icon = create_scaled_bitmap(nullptr, m_action_icon_name);    // FIXME: pass window ptr
 
+    if (m_type & itInstance)
+        return; // don't set colored bitmap for Instance
+
     // set extruder bitmap
     int extruder_idx = atoi(m_extruder.c_str());
     if (extruder_idx > 0) --extruder_idx;
@@ -2149,7 +2152,7 @@ wxWindow* BitmapChoiceRenderer::CreateEditorCtrl(wxWindow* parent, wxRect labelR
     wxDataViewCtrl* const dv_ctrl = GetOwner()->GetOwner();
     ObjectDataViewModel* const model = dynamic_cast<ObjectDataViewModel*>(dv_ctrl->GetModel());
 
-    if (!(model->GetItemType(dv_ctrl->GetSelection()) & (itVolume | itObject)))
+    if (!(model->GetItemType(dv_ctrl->GetSelection()) & (itVolume | itLayer | itObject)))
         return nullptr;
 
     std::vector<wxBitmap*> icons = get_extruder_color_icons();