Why isn't the perspective slider functioning in the 3D and Materials panel?

[rditty]

In my 3D and materials panel the perspective slider doesn't work. It isn't grayed out but the slider won't move and I can't input a number into the box on the right either. Does anyone know why that might be the case?

[rditty · Accepted solution]

It's working now. I had restarted the program and my macbook but it was still frozen. However, for some reason, after I clicked through the other panels (materials and lighting) and came back to "object" it started working. It must just be a weird glitch.