I'm using a Razer Tartarus to play and in the past I occasionaly (rarely) had the game ignoring the D-pad button if I kept pressing it during a loading screen, that was very rare but ok because you easily could fix it by pressing the d-pad direction again.

Since U49 the game has started ignoring some D-pad releases which makes the character suddenly run into a direction without you pressing anything until you press that direction again on the D-pad, it can happen up to every minute while in PvP.
- It doesn't happen on other games
- It happens more on PvP evenings and rarely on PvE mornings but still (maybe the server load has something to do)
- It still happens at the same frequency with addons off