It looks like some of the new skins for large furnace and electric furnace behave differently when re-skinned with the spray can. I think the models themselves might be changing rather than just the texture and it's breaking the True PVE locking logic.
Specific example:
If I place down a large furnace and add a lock to it, then re-skin to the Industrial skin with the spray can, it removes the lock. I can then no longer place a lock on it.