MixConsole Navigation missing

MIxConsole Navigation is swallowed up at the top of the windows. Don’t know how to get it back. See Screenshot.

I think this should never happen, but does anybody have any ideas how to remedy the situation? Thanks!

This is Cubase 9.5.20 on Win 10.

Seems to be a known issue. Actually it’s the toolbar that’s missing: https://www.steinberg.net/forums/viewtopic.php?f=250&t=107447&p=728436