As you can see in the video, the union is having an error when it is separated and when it is time to join other parts together, I need help to solve this error.
This union that I made was 4 months ago, I don’t know if Roblox Studio had any update in that time, which may have reduced the size of the parts but this is bugged.
Does anything show up in the output widget when you try separating that union?
Have you tried toggling the “Studio solid modeling improvements” beta feature and restarting Studio?
Another problem with Roblox studio to add to the list. pfft . I’ve had this issue as well and have been forced to reboot the whole studio just because it doesn’t separate properly. If anybody encounters this issue I suggest you do the same and sometimes it can solve the problems with these types of things.