Which means that you either make it right in blueprint or you cannot fix it anymore after. Should behave the same for ghosts and real entities.
I guess the bug is that wall ghosts can be connected (probably the logic that checks if it is attached to door is flawed). Although I honestly wish we could use walls to propagate cables at least on platforms so my vote goes on to change the non ghost entity behavior. Much more elegant this way. But also because now I will have to rewire my largest platform yet now.
