Does it do it even if you don't alt-tab ever? Did you say you are running this under win?
Yeah, hadn't alt-tabbed yet when it happened. Running on Win 10. I'm on Twitch right now if you want to come in, just drop me a message in chat and I'll switch up what I'm doing and jump back into Hazel. I can't even find my way out of the bookstore yet lol. Not to shamelessly plug, but https://itch.io/abraxas86