Not a major glitch, but one i have noticed more recently.
If you are auto running, and click autorun again to stop. Whatever movement you press after this (autorun again, or WASD) often your character will glitch a little move into halfway through a run animation and not move.
You then have to release whatever movement you pressed, and press another movement key a couple of times before you can move freely again.
Mostly not much of an issue, but on occasion of you get caught by a mob whilst autorunning can be a more serious problem as you cannot dodge/move/etc whilst the mob merrily smites you.