Confirmed.
Windows 7 64 Bit
Intel Core i7-3930k running @ 3.8GHz 32.0 GB Memory
I have not had the issue so far on the stable release. But if I use the experimental .50 release it has the issue. It acts like your keyboard button is stuck when it is not. Tapping the key again a couple times will break the sticking movement for that direction. Deleted key double tap in configuration for Q and E. But have not been able to get the movement WSAD keys to function like they should without sticking on .50.