I tried just now and it works? I first clone and edit Slime world, then I disable the 3D character model setting (because the checkbox is on by default) Downloaded and play the world and no more character model.
Cloned worlds from version 1.0.3 don't work too. I said 'don't work' means that no 3D model is output when option enabled.
ohhh its the otherway, got it I’ll fix
fixed
👍