Aiming DeadZone bug.
1) while in game ESC -> Configure -> controls
2) you will see the slider for Aiming Dead Zone
3) increase the value either by dragging the bar, or clicking the right arrow.
4) close the menu
5) return to game, still no deadzone.
6) esc -> Configure -> Controls
7) Aiming deadzone slider is back down to zero
Mouse Acceleration bug.
1) again, while ingame ESC -> Configure -> Controls
2) Click Mouse acceleration button
3) button does not toggle