I upgraded to from Godot v3.4 to v3.5 a few weeks ago and since then keep getting Editor freezes on Windows, probably once every 30 minutes. The screen tends to "flash" a bit, if I have the game running it's still responsive, but the Editor just freezes. It won't repsond to clicks, and I have to force kill it using task manager. Occasionally I see the pop up for "creating thumbnail" just before the freeze, but not always.
Has anyone experienced this before and can offer a possible solution? It's getting really frustrating and totally gets me out of "the zone" mid flow! I've considered reporting it as an issue but I can't reliably reproduce it, so I assume any issue I report will just be closed.