Kaziklu
8
Thralls disappearing and falling through the ground has literally been a thing since 2017…
Currently there is a chance if you leave the grid you are on they will reappear when you reenter the grid. Sometimes you may only need to leave the render distance.
I often run a grid over and they will respawn… (of course so will the mobs in single player)
However… If fun come hasn’t fixed it in 6 years they aren’t going to even try.
This screen shot is literally May of 2018.