I made 3 fences inside a large red barn to protect the doors.
Out of the middle fence i made a gate.
The other two fences get a platform with stairs.
I put a 4 digit combination lock on the gate and all fine!

Somehow i put the lock at the right fence and not the gate.
When i opened it my fence rotates like a gate.
Im not able to close it again. After Server restart it stays at the 90 degree roation.