Can't Type Sometimes

Okay, so I dont know what I've been doing, but at times I can't type any letters or anything, and instead it opens shortcuts. When I press enter I go into Windows Mode, and out, I can't type anything, it seems like it has something to do with ALT. It stops when I log out of Maple. But I'm not sure, does anyone know what triggers this?

when it happens to me, i just press both alt keys, both ctrl keys, and both shift keys all at same time and it unsticks. or you can trying slamming your alt/ctrl keys, i hear that works too o.o

Try opening task manager.

mm.. i'll give them a go

Simplest way to make sure it never comes back; don't put anything on your ALT key.
I changed my jump to space to compensate for this glitch.