QuickDesigner: Renaming id inside Navigator does not repaint preview

Steps to reproduce:

• create/open Quick App/QmlProject
• switch to Designer (with the respective qml file)
• select an item on the Navigator widget
  • respective item gets highlighted border inside preview including its id on top
• double click the item inside the Navigator widget
  • id (inside the Navigator widget) becomes editable - change the id and hit Enter

Current result:

• Navigator widget and Properties widget get updated
• Preview seems to be not updated (on top there's still the old id displayed)
  • in fact it gets updated, but seems not to trigger an repaint (moving mouse cursor across the id on top of the selected item inside the preview makes the id update and displays the new value)