When pressing a button to activate a /tp command, if teleported to an unloaded area, returning to the teleporter you find the button is still pressed.

This happens consistently on my map I'm creating. It is more difficult to reproduce on a new 1.4.6 map, but if you teleport into an uncreated area (at least 400-500 blocks away) then use the /tp command to go back, the button is sometimes still pressed. It usually resets itself after a short while, but on my map I was also using pistons to move some blocks around and the blocks weren't resetting.

It may have something to do with loading/unloading chunks - when I /tp-ed back and forth between the same locations the issue went away after about 5-6 jumps.