Border around the Windows Start menu in Coherence Mode

Hi
When I'm using Coherence mode I have faint gray border around the Windows Start menu
How to fix it, thanks
macOS 26.1, Parallels Pro Version 26.1.1 (57288)

 

I have the same problem. In my case, sometimes it is just gray border, sometimes it is part of another app window (with text etc.) - see attached file. Anyone has any suggestions?

MacOS 15.7.2 (24G325), Parallels Pro Edition 26.1.1 (57288)

 

I reached out to customer support -- they told me the issue is in the code and that they're going to check it further with the development team.