- Put UMP45 on the ground with UMP magazine (mag) attached
- drag just the UMP mag from the weapon lying in the vicinity into players hands
- reload UMP mag with .45 ammo from inventory
- place UMP mag into player inventory
- bring UMP weapon from vicinity into players hands, notice the mag still appears attached
- drag UMP mag from player inventory to "Combine" in player's hands with UMP weapon - nothing happens
- UMP visually appears to have a mag attached, but the HUD shows "0(+0)" acknowledging no mag is attached
- tried loading up in a different server, same-result.
There appears to be no way to remove the phantom mag from the UMP. The gun is rendered useless by this bug.