I cannot show you this, or ensure it works on PC, but I know for a fact when using the Overload mod in conjunction with the mirror function or undo function on mobile, it normally results in some sort of messed up piece. like, stacked pieces, which are completely disconnected, whenever using the undo function repeatedly in quick succession, it bugs out the pieces, and can really mess up aircraft. the only fixes I found for the 1st one is to get rid of the first failed reflection, while checking to make sure it stayed disconnected, and deleting the reflection. I'm not sure if the undo issue is fixable.