Fixed context menu showing up when user right clicks on 3D scene and release the mouse button after dragging over the objects list

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;

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;
 

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*/)