Expected Behavior

Carried mob to be held in hands after traveling through dragon end fountain

Actual Behavior

Carried mob got deleted instead

Steps to Reproduce

Go to the end
Kill the Ender dragon to spawn the fountain
grab a mob
jump through the fountain
aaaand it's gone

Version of Minecraft, Carry On, Forge

CarryOn+MC1.12.2+v1.9
Forge 14.23.4.2703

Screenshots encouraged

Here's a sick screenshot of a mob in the end.
https://cdn.discordapp.com/attachments/411302369553547275/457032736998424577/2018-06-15_09.49.57.png

What mob is that? From what I can gather from my testing, it looks like the carried object gets dropped in the overworld when going through the end portal. I've tested with normal Blocks, TileEntities and Squids and Endermen.

It is a hippohryph from Ice and fire, a passive mob that doesn't despawn naturally

Speaking of dimensions, I haven't test with modded dimension transfering.

So when observing it further, I noticed that the block or entity that you were carrying gets dropped at your spawnpoint

Edit: This is intended, I just forgot about it. I made the game drop the block or entity at the spawnpoint when you get back to the overworld because otherwise, exploits could have been made.

Can I get it back, like with hoppers?
But how will I get my mob back?

How will I get the mob I carried back then?

The block and the mob gets dropped at your spawnpoint.