Game Version number: 1.4.0.22
Modded?: No

Issue Description:
After pulling the grenade pin, everything looks fine - the soldier aims with his left hand. However, if you move in any direction, the aiming animation completely disappears and only returns some time after stopping movement.

Additionally, when transitioning between standing and crouching positions, the left hand makes a strange sudden movement.

When going prone, the left hand doesn't raise at all (which is probably intended), but if you transition from prone to any other position, the aiming animation doesn't play again until the user moves.