Put the summary of the bug you're having here

What I expected to happen was...:
In Seed-8094280050187681634, the End Return Portal is destroyed by the Void, and even if you kill the End Dragon, you can't return to the Overworld

What actually happened was...:
In Seed-8094280050187681634, the End Return Portal is destroyed by the Void, and even if you kill the End Dragon, you can't return to the Overworld

Steps to Reproduce:
1. It can be triggered by entering the End in -8094280050187681634 and killing the Ender Dragon