If you walk (slowly) and then lower your weapon, your character keeps walking for about 3 seconds.
This isn't just annoying, but a real gamebreaker at times.
PLEASE fix this.
Update with video:
Aside from the fact that it's annoying on its own, the occuring situations are a lot worse:
Players lower their weapon, keep moving and uninentionally leave cover or are unable to quickly flee when the situation requires it.