No idea why but in the repro file I have attached, the union and negation will crash studio no matter what if you try and put them together. I’ve tried remaking the negated part and separating the large union and only trying to union part of it with that negated part at first and so far it has crashed studio every time without fail. It’s not a huge deal for me but I thought I’d leave it here in case there is something that can be done about it so it doesn’t happen in the future.
Union That Crashes Studio.rbxl (18.6 KB)
Edit:
Studio Version: 0.256.0.83059
Computer Specs: