Camera angle in base editor

Are there any limitations to rotating the camera angle when in the 2x2 rooms?
I just started my first base and I'm trying to stack storage racks (using the lamps/safes & floor tile methods) in my 2x2 workshop, but I can't get the camera to rotate at all - only zoom in and out.

If I exit the editor, everything works just fine using my right mouse button to rotate the camera angle. Is there an option in the keymapping I'm missing?

Thanks.

hm... Can't you achieve the desired results by simply turning your character? I never tried rotating the camera while editing since the only time I rotate the camera is for screenshots showing the front of the character.

For me, it's holding down the right mouse button and moving the POV around that way. If you've rebound your keys, look at your options to what you have "mouse look" set to.