I noticed a problem: in very narrow areas (between a wall and sandbags for example), I found myself stuck and unable to move! I could only lie down, crouch and turn. This problem happened 20 meters from the spawn, and I had to wait until the end of the round to be unlocked.
Another problem: I managed to get my character to advance alone! It was a real ordeal, whether I was crouched or on the ground, I kept going. I tried to go back and press all the buttons without success. At 1st respawn, the bug continued, at the second it disappeared.
Finally, yesterday I noticed that someone had a "slightly" twisted arm (see the link)..