After the latest Tumbleweed update/upgrade, the VirtualBox GUI forgets that I
activated the status bar: 

The GUI now starts without the bars. I can still activate the bars via a
right-click. If I now restart the GUI, it shows up again without the toolbar
and the status bar.

I've tried to change the corresponding settings in the file
".VirtualBox/VirtualBox.xml". This works, but as soon as I quit the GUI, it
resets my settings in the VirtualBox.xml.

So now I have to activate the toolbar and the status bar after each start of
the VirtualBox GUI.