-> You can actually release the lever on a frag grenade before you take out the pin, which is impossible IRL. It's not just an audio bug (as I said in the video). Also, double-tapping the mouse key can cause this bug to occur.
-> If you look down while moving when prone, there's a different set of animations, but there are quite a few bugs (with the M4A1 and L106A1 in the video). Also, the knife actually goes through the ground, as well as your hand, if you look down while prone and not moving.
You can still resupply for extra rockets even though that's been supposedly fixed for months. Fixed with the Heavy Carrier allowing for three rockets. However, you can tap-resupply for an extra rocket (for a total of two) with a Light Carrier and without a carrier at all.
-> Attempting to fire an empty rocket launcher will make you switch weapons, even if you can reload it with another rocket.