Sd.kfz. 221 turret bug?

Turret on my German sd.kfz. 221 turns to left of center, but does not turn right of center. Didn’t it used to traverse to the left and also to the right? How can I fix this?

It’s alway been that way

It doesn’t have a turret, just a fixed cupola with a gap so the gun can traverse in, and if you look the gun shape blocks it from traversing to the right.