When I fell down into pandemonium I couldn't close the scroll...
Also, a bit later I managed to get stuck when I moved the crate too far into the wrong direction. Jumping on the crate was extremely difficult as well... it seemed to always want to push it instead.
At least the arrow keys did work, crowding all controls into one hand and having to switch between Shift and Control with the same hand that has the movement directions is something I really don't get along with. (Which is probably one of the many reasons I', not a fan of FPS games with WASD+Mouse and half a dozen of other keyboard functions)