This only works on window mode of world of warcraft, i discovered with about a year back accidently, i was moving on my mount and i right clicked my world of wacraft taskbar, came up with a bunch of options like [Close] [Minimize] [Maximize] and i noticed i stopped moving even after i used auto walk, and i sat there a while, and then clicked back inside my wow window, and i was still auto walking, but i never moved from the spot i was frozen from.
Basically, i then tested it, and jumped off a big mountain, and right clicked [World Of Warcraft] in the taskbar, the game froze, and i went to get something to drink and i came back, clicked inside my windowed game, and i didnt move from the spot i was falling from since i left, although i died once i reached the bottem xD.
[Extra] Have fun?
[Edit]ONLY WORKS IN WINDOW MODE