Let's say I spawn in a B.A. zombie and a Human Medic. (Or Combine Soldier/Rebel/Civil Protection, doesn't matter) The medic isn't fast enough, as it gets infected and dies to the zombie. Soon after dying, it gets back up as a zombie. If I were to kill this new zombie, it's model lingers in the air for 1-2 seconds after it dies. Thankfully it's not directly affecting gameplay, but it's a little annoying since I can't see the zombies behind it.