I've installed the TortoiseGit Windows Shell extension on my Win 11 Version 21H2 machine. TortoiseGit adds a right-click context menu to both DOpus and Windows Explorer.
Disturbingly, Directory Opus does not only show the correct context menu entry upon right-click...
We have a long-term development branch where the problem doesn't happen, but haven't worked out where the difference is yet. That means it should be fixed in the future in any case, but if we can work out where the difference is we should be able to fix it sooner.