This is normal

about 10 minutes or so and then they disappear as intended

It's normal :) and hope it will stay like this

In my opinion they should stay longer. like until a server restarts or something like 1-3 hours, because it would make sense that someone looted everything then he gets shot, the body gets looted and what ever he still has with him just disappears.

I mean they need to go away for making sure the server does not lag. Although I feel it would work better if there were a certain number of bodies on the server until the old ones start despawning. Like if there was a limit of 20 bodies on the ground at a time, and 20 people are dead on the ground when the next person dies the first dead person goes away. I mean if this game is supposed to be realistic I feel that bodies just going away effect the immersion of the game, because if you see a body you know someone is near you.

It used to be that way, but in order to clean the server up to help keep it less lag free and crash free they set a timer on the bodies. If someone is with you and you die they can remove your gear and you can come back to get it later, but if they leave it on your body then yes it is gone. So they will not never this at all. If anything maybe increase to 20mins but that is it.

Hello keldore and thank you for the report.
Corpse despawn is an intended mechanism as it would lower performance a lot to have all the player corpses persistent.
Regards,
Geez