Blacked out windows in Coherence mode

Running Win10 and Win11 on M1 in Coherence mode, and both exhibit this issue. Once in a while, the windows just go black (see attached screenshot). Observations:
1) OS is not asleep or frozen, as I can actually open more apps through Spotlight, but they also appear black
2) Exiting and entering coherence fixes the issue
3) Black windows can be moved around but do not accept input or clicks
Any ideas?

 

same problem here after update