Changing the collisionfidelity of this union to 'Box' crashes studio every time

Bug Reports Studio Bugs
#1

Swag.rbxmx (50.8 KB)

#2

(after download it and trying the new union it’s fine. But the real version on my game still crashes)

#3

Can you send me the real version then? This one doesn’t repro the issue, so it’s not very useful.