Although your engine version is different, I think you might be experiencing a different expression of this issue:
Especially considering the timing being when you mouse-over editor elements like blueprint nodes, as this is the same timing when the issue occurred for me when I was using the latest AMD drivers. And I think I might have noticed similar corruption on the screen, although it ultimately caused full system lock-ups for me.
The only effective workaround I have found is to install this old AMD driver from 2021 as mentioned in a different post. There might be a different driver version that also works, but this is the only one that has been confirmed as far as I know. So I am curious if this driver fixes your issue - if not, then it might be a different problem.