[MC-147652] Ender Dragon clones if teleported through a gateway block

The bug

In 1.13.2, it is possible to clone an ender dragon by somehow getting them to an end gateway block.

How to reproduce the bug

1. Go to the end.

2. Setblock an end gateway at the ender dragons Bedrock bed.

3. Go inside the Gateway once the dragon has teleported, multiple dragons will appear.

(NOTE: You can't tp back to the island, otherwise the clones will disappear)

Attachments

This in no way is a duplicate, the issue that I "duplicated" does not report any dragons being cloned.

Please provide reproduction steps without the use of the data pack/function.

Added.

Wasn't able to reproduce. Please make sure these reproduction steps work in a new world (without the functions of course).

Alright, checking.

Okay, apparently they don't teleport but it makes a column of end gateways

Nevermind, they do teleport.

Mark this report as invalid, the ender dragon doesn't clone anymore.