World loading errors

Same error here. I fell down the loading error in survival, but didn't die. Instead got teleported back up immediately.  I can see a lot of mobs, they don't move but their heads glitch around very quickly.

19w13a , The world was loading fine in the last snapshot. 

Also present in a newly created world.

Edit: With Local Multiplayer my friend can walk in chunks that haven't loaded for me, but I still can't access them. I can see him walking on air just fine. The chunks are always related to where in  the world you load in.