System track bug on Windows

When Alt-Tabbing out of Dorico and back again, any system track selection goes from looking like this:

To this:

Zooming makes the missing buttons re-appear.

Dorico Pro 5.1, Windows 11.

You don’t even need to Zoom - pressenin Alt twice seems to also do the trick…

I saw that when you press Alt the first time (in order to Alt-Tab then), the icons already hide away, but they seem to not come back again when leaving the window in this state.