I just got a shiny mac, and for some two touch combination on the touchpad, mrview gets stuck moving the image around in the window and no amount of clicking or esc seems to stop it; I usually have to quit and relaunch.

I compiled recently from Git (I can pull, recompile and test when plugged into AC again) against Qt5 from brew, in case that helps. Maybe it's a glitch in Qt or Mac, not mrview. Any tips would be helpful.