Describe the bug
It is not possible minimize/maximize/resize/move Data Catalog, Layers, Tools pane after the wxGUI quit dialog is closed.

To Reproduce
Steps to reproduce the behavior:

1. Launch the wxGUI with single window mode
2. Invoke wxGUI quit dialog by keyboard shortcut Alt + F4 or hit wxGUI window X button
3. Hit Cancel button on the wxGUI quit dialog
4. Try to minimize/maximize/resize/move Data Catalog, Layers, Tools pane

Expected behavior
Minimize/maximize/resize/move Data Catalog, Layers, Tools pane should working after the wxGUI quit dialog is closed.

System description:

• Operating System: all
• GRASS GIS version: 8.3.dev, 8.2

wxPython:

• 4.0.7.post2 gtk3 (phoenix) wxWidgets 3.0.5
• 4.2.0 msw (phoenix) wxWidgets 3.2.1

Additional context
If wxGUI quit dialog is invoked from the menu File -> Quit GRASS GIS, minimize/maximize/resize/move pane is working.