I witnessed this very bug on a Twitch stream yesterday.
Can't 100% confirm it as the streamer didn't have coordinates on, but if you look closely just before dying they look up and can see the bottom of the islands somewhere in the distance (which would make sense because their sand duper is at low coordinates in the overworld).
The video is here, at 1:41:45 . Very clearly the player is pushed into the side of the end portal by a slime block pushed by a piston, immediately gets teleported in the End somewhere under the terrain, starts falling but doesn't see it because of everything being black, and quickly starts taking void damage.
Zos_Kia
I witnessed this very bug on a Twitch stream yesterday.
Can't 100% confirm it as the streamer didn't have coordinates on, but if you look closely just before dying they look up and can see the bottom of the islands somewhere in the distance (which would make sense because their sand duper is at low coordinates in the overworld).
The video is here, at 1:41:45 . Very clearly the player is pushed into the side of the end portal by a slime block pushed by a piston, immediately gets teleported in the End somewhere under the terrain, starts falling but doesn't see it because of everything being black, and quickly starts taking void damage.