Same issue here, and I’ve resorted to habitually pressing the Windows key nearly every time I do anything. It’s driving me crazy, and it’s still happening in 5.3.
I have a handful of UE5 projects yet only one of them exhibits this problem, and it was a project that’s been updated to each version that started on with 4.27 (maybe 4.26, I don’t remember).
This tells me it’s either a corrupted project or some legacy setting that’s breaking something else.
For those of you seeing the problem too, are you seeing it with fresh 5.x projects or were they also something that came from the 4.x days?