Now that we can shoot on the move, can we no longer interrupt our own shots if we wanted to? For whatever reason, like making a mistake in my shot rotation. I use to be able to stop casting by jumping up or sometimes just moving my toon a bit.
For some reason hunters require two of these commands in their macros. This command is mainly used for interrupting the cast of Steady/Cobra Shots, so it is a good idea to include it in all of your instant spell macros.
I got the same problem as you. I was used to move a bit to stop casting, but now i got used to hit esc twice. Try it and soon you get used.
unplug the computer or turn it off... but on a second thought...that may bother your team mates. lol