OK, thanks for checking!
Have you also reported that to Microsoft? I've also checked with the Beta version 22621.1 which still works as expected.
Edit: I've reported the issue via Feedback Hub to Microsoft at https://aka.ms/AAh7fez.
If you're on the Dev Insider channel, it would be great if you could upvote the feedback so that it gets some attention. From what I see, only very few Win32 apps do support the new Windows 11 context menu via a sparse package yet, so I suspect, very few others would report that.