Gray box showing up when running coherence

[toonetown]

I am running Windows 11 on PD18 in coherence mode. Periodically throughout the day, a large gray box will show up for about 10-30 seconds covering the left half my desktop. It looks and feels like parallels is trying to show a window, but nothing is shown. When I switch out of coherence, the box goes away. Is there any guidance as to what could be causing this? It seems to have started all of a sudden - without a change to my parallels configuration, installed version, or windows configuration.

 

[AlessandroB9]

After 20 days from when I share my last reports I'm not getting answer...
SO?!?!
Parallels?!?!?
Are you alive?!?!

 

[ThanhH2]

I'm also getting these grey boxes

 

[GoertekI]

I updated to the latest v19.0.0. the issue still remains. I have to restart Windows every time to get rid of it.

 

[Beignett]

In Parallels 19.4.0 the "grey box" issue still exists. I already had to restart windows this morning to get rid of it.
My first screenshot of this problem was one year ago now!!

 

[ThomasS99]

I have same issue . What is the fix ?

 

[DRC.Shrimp]

I have same issue . What is the fix ?

In my case, this problem is fixed at 19.4.0. It's been taking about a year to solve. I think it's effective way to solve the issue when it's including screenshot to check using framework.