@Zitiache
I looked at this too and had no problem with it except that I found when you bury the partitions in the wall, the one with the TP holder will sort of blink in and out in live move if not placed just right. It took some fiddling with the placement to get it to not do that but I was able to do it. And I was able to place it with no problem even in the corner of a building. I tried it in several configurations and in both corners of a building.
I think this object was meant to be free standing though so any time we use the cheats to change the placement on objects like this, it can lead to some odd results.
Hope this helps.