Ender Dragon respawns and exit portal does not open if the world was Saved and Quit in End before killing the dragon

Verification builds:

Retail 1.19.4 | Java | Windows 10 – No

Snapshot 1.20 Pre-release 1 | Java | Windows 10 – Yes

Snapshot 1.20 Pre-release 1 | Java | Windows 8.1 – Yes

Snapshot 1.20 Pre-release 1 | Java | Windows 7 – Yes

Snapshot 1.20 Pre-release 1 | Java | MacOS – Yes

Snapshot 1.20 Pre-release 1 | Java | Linux – Yes

Snapshot 23w18a | Java | Windows 10 – No

 

Repro Steps

1. Launch the title
2. Go to Singleplayer > Create New creative world
3. Create End Portal using End Portal Frame and Eyes of Ender
4. Go into the End > Press ESC > Save and Quit to Title
5. Rejoin the world
6. Kill the Ender Dragon
7. Observe the issue

Observed result:

Ender Dragon respawns and exit portal do not open if world was Saved and Quit in End before killing the dragon. Dragon’s health bar will also appear always full, however it can be killed. If the world is exited again before killing the second dragon, exit portal will remain closed and the third dragon will spawn, so on and so forth.

Issue does not occur if Ender Dragon is killed before saving and quitting the world.

Expected result:

Ender Dragon do not respawn if the world was Saved and Quit in End before killing the dragon, its health continues to update and exit portal opens after killing it.

Attachments:

• Logs
• Video