[QUESTION] What is this weird static on the union?

[PeZsmistic]

Could you please post your model in this thread?

CSG Failures

That’s a known issue that isn’t really being solved. Another reason I don’t like to always use unions. Basically your union was corrupt. You can see the outline, but if you try to alter the shape of it/union it, then it deletes itself. This has happened to me on MULTIPLE occasions, one time literally destroying my whole game which I spend about 4 months on and was almost complete.