I wonder if this is Rust or Oxide related.
When reconnecting in the game I died sleeping on my bed in my base.
Found my body under the map in the water.

Death Notes and the Killing screen say I killed myself. I don't know why that happened.

You can swim to land and go through the ground, but can't go back. I presume you're the admin, and logged off under the map, and can no clip back to normal...?

I am the admin but didnt to any noclip before logging off.
I just logged off like a normal player standing on my bed in my base on the first floor. That's it.

Are you using Vanish?

If so, latest Vanish has a config that will place admins underneath of the map when they disconnect if they were in Vanish.

I use it, yes.
I'm pretty sure it wasn't activated when logging off.
Also, placing admins means killing them?

No you were placed under the map, but you didn't have god mode.

Ok. Might be. Does god mode stay when logging off and logging in again just like noclip?