If you go to the end from nether,the loading screen background is not end portal .It is the Nether portal

Put the summary of the bug you're having here

What I expected to happen was...:
Use the End portal to the loading Screen background.

What actually happened was...:
It use the nether portal to the loading screen background

Steps to Reproduce:
1.Make an End portal in Nether

2.go in to the End portal