Ever since I upgraded to CS6 (Mac OS X Mountain Lion), I've been having this extremely annoying problem: When I go to grab the little handle at the bottom of a text box in order to make the box longer, the entire InDesign window scoots down to the bottom right corner of my screen, and the text box I grabbed flips itself upside down at the top of the pasteboard.
I've tried Googling this problem but can't find anyone else who's having the same issue. I feel like I must be activating some random shortcut accidentally, but what? And how can I avoid it? It is driving me NUTS!!!