Weird Linux build problem: some of the time, game works great. Some of the time, everything seems fine and normal in the menus but when gameplay starts, pieces are shoved to the right immediately. I can still tap Right and Left and the screen does the little 'bump' animation, so it's registering those normally, but at most I can bump the piece left for just a moment and then it hugs the right wall the rest of the way.
Keyboard only, no gamepad / joystick of any kind plugged in.