Fix missing blocking of selection manager update when updating table selection

Caused crash in the Well Path editing (dragging targets)

Fwk/AppFwk/cafUserInterface/cafPdmUiTableViewEditor.cpp

@@ -298,8 +298,10 @@ void PdmUiTableViewEditor::onSelectionManagerSelectionChanged(int selectionLevel
             QItemSelection itemSelection = m_tableModelPdm->modelIndexFromPdmObject(pdmObj);
             totalSelection.merge(itemSelection, QItemSelectionModel::Select);
         }
- 
+
+        m_isUpdatingSelectionQModel = true;
         m_tableView->selectionModel()->select(totalSelection, QItemSelectionModel::SelectCurrent);
+        m_isUpdatingSelectionQModel = false;
     }
 }
 
@@ -310,7 +312,7 @@ void PdmUiTableViewEditor::onSelectionManagerSelectionChanged(int selectionLevel
 //--------------------------------------------------------------------------------------------------
 void PdmUiTableViewEditor::slotSelectionChanged(const QItemSelection & selected, const QItemSelection & deselected)
 {
-    updateSelectionManagerFromTableSelection();
+    if (!m_isUpdatingSelectionQModel) updateSelectionManagerFromTableSelection();
 }
 
 //--------------------------------------------------------------------------------------------------

Fwk/AppFwk/cafUserInterface/cafPdmUiTableViewEditor.h

@@ -157,6 +157,7 @@ private:
     int                     m_tableSelectionLevel;
     int                     m_rowSelectionLevel;
     bool                    m_isBlockingSelectionManagerChanged;
+    bool                    m_isUpdatingSelectionQModel;
 
     caf::PdmChildArrayFieldHandle* m_previousFieldHandle;
 };