BSP guizmo won't center anymore


I activated the option in Editor Preference>Level Editor>Miscellaneous to move the BPS pivot automatically, and it worked fine for a while, but it stopped now, all my BSP are not centered anymore and I don’t know why!

What’s even more strange is that I tried to load a new map, and it still works fine there so it must have something to do with my “corrupted” map…

Anyone knows what might be the problem?