just choose 3x2 and will stick there ... until you change it again ... unless you are trying to change a 3x2 to a 2x3 ... i think it finally recognizes l vs p orientation and applies the crop the same way ... at least that is the behavior i have noticed ...
afaik, there is now keyboard shortcut for this ... not sure you could even assign one to it thru the customize keyboard ... i really didn't look into that ...