I initially thought that the little move/selection handles weren't displaying in the main viewport when using an ortho camera, but upon closer inspection (because I clicked through all of them and noticed that the rotate tool actually displayed a visible, but still small circle), I could just barely see teeny tiny 'handle objects for the move tools in the main view port in edit mode. Is there a way to make them bigger? They are so small, I can't even manipulate them.