Handin server "ok" button minimizes whole DrRacket app?

Several of the windows-using students in my class are reporting an irritating issue when using the handin server (DrRacket v8.11.1, Windows 11); specifically, when they click the "okay" button on the handin-server window after an error is reported, it minimizes the whole DrRacket window. I ... should have a windows machine to investigate this. Do other users of the handin server see this behavior on windows?

Yes, I've seen this as well but not figured out what was wrong.