This nagging little problem started after I installed PD 26.3.0, and it always resolves after forcing the VM to reset.
My MacUpdater program claims there is an incremental PD update to 26.3.0 (57425) that may address the problem. I haven't found that new version on your site. Is it still in beta?
Edition Windows 11 Pro Insider Preview
Version 25H2
OS build 26300.8170
Experience Windows Feature Experience Pack 1000.26100.348.0
Parallels Desktop Pro for Mac 26.3.0 (57392)
MacBook Pro M3 Max / macOS Tahoe 26.4.1
My MacUpdater program claims there is an incremental PD update to 26.3.0 (57425) that may address the problem. I haven't found that new version on your site. Is it still in beta?
Edition Windows 11 Pro Insider Preview
Version 25H2
OS build 26300.8170
Experience Windows Feature Experience Pack 1000.26100.348.0
Parallels Desktop Pro for Mac 26.3.0 (57392)
MacBook Pro M3 Max / macOS Tahoe 26.4.1