When I set the X-Value of the camera orientation in my scene to 2.5 (or any other value with something after the decimal point), it works fine at first, the viewer updates correctly. As soon as I select another layer though, the orientation value immediately jumps to 25. Setting it to 5.5 will jump to 55, so it just seems to lose the decimal point and make a whole number out of it. Very weird behaviour, most likely a bug.
This might be an issue with the integrated gpu I'm on right now (not at home), but I'll check that as soon as I get home.
Microsoft Surface (awesome device by the way ), i5 4300U with integrated graphics, 8GB RAM, Windows 8.1.