This only just started happening, but basically if I tab out of blockland and then try to return to the window it just sits there frozen while not actually crashing. I've tried changing between windowed/borderless/fullscreen and it didn't make a difference. Occasionally it'll successfully reopen the game but that doesn't really solve anything because its pretty much either play blockland and do nothing else or dont play at all.
The launcher also takes ages to load up after the game's crashed once before as well, it'll be visible in the processes but it just sits there doing nothing for a good few minutes before finally appearing on screen and launching the game, which then does exactly the same thing as the launcher.
Only fix I've found is to restart my computer entirely and that only works for at most an hour before it happens again, not much of a solution either.