- upgraded all the plugins such that at each launch the Plugin UI is reinitialized reducing the chances to get errors like "wrapped up C++ object deleted" with the side effect that the performance might be slightly reduced

appGUI/GUIElements.py

@@ -3306,8 +3306,32 @@ class FCDetachableTab2(FCDetachableTab):
         except TypeError:
             pass
 
+        self.__auto_remove_closed_tab = True
+
         self.tabBar.onCloseTabSignal.connect(self.on_closetab_middle_button)
 
+    @property
+    def auto_remove_closed_tab(self):
+        """
+        A property that allow the user to handle the tab removal on he's own
+
+        :return:
+        :rtype:
+        """
+        return self.__auto_remove_closed_tab
+
+    @auto_remove_closed_tab.setter
+    def auto_remove_closed_tab(self, val):
+        """
+        A property that allow the user to handle the tab removal on he's own
+
+        :param val: If to auto remove the tab
+        :type val:  bool
+        :return:
+        :rtype:
+        """
+        self.__auto_remove_closed_tab = val
+
     def on_closetab_middle_button(self, current_index):
         """
 
@@ -3330,7 +3354,8 @@ class FCDetachableTab2(FCDetachableTab):
         tab_name = self.widget(currentIndex).objectName()
         self.tab_closed_signal.emit(tab_name, currentIndex)
 
-        self.removeTab(currentIndex)
+        if self.__auto_remove_closed_tab:
+            self.removeTab(currentIndex)
 
 
 class VerticalScrollArea(QtWidgets.QScrollArea):

appGUI/MainGUI.py

@@ -906,6 +906,7 @@ class MainGUI(QtWidgets.QMainWindow):
         self.notebook = FCDetachableTab2(protect=True, protect_by_name=[_("Project"), _("Properties")], parent=self)
         # self.notebook.setTabsClosable(False)
         self.notebook.useOldIndex(True)
+        self.notebook.auto_remove_closed_tab = False
 
         self.splitter.addWidget(self.notebook)