Crashes when returning to the Overworld through the End podium

[NyaYuuru]

General Information

Dump: https://dump.viaversion.com/5894f37e390b1008e20f16e46509ee514612f95174c227a1ef2b831ddec6454e
latest.log: https://mclo.gs/RXMkhDk
Crash Report: https://mclo.gs/znDnwoL

Bug Description

When connected to a Paper 1.20.4 server, the client crashes immediately after entering the End podium to return to the Overworld.

Steps to Reproduce

1. Launch Minecraft 1.21.11 .
2. Join a Paper 1.20.4 server.
3. Enter the End.
4. Enter the End podium.
5. The client crashes immediately.

Expected Behavior

The player should return to the Overworld normally without the crashing.

[Barvalg]

[Kichura]

Is this recreatable on a vanilla server aswell?

[NyaYuuru]

I did some testing and found that my previous conclusion was incomplete.
On a vanilla Minecraft 1.20.4 server, the first time I entered the End podium, the client did not crash.
However, after that, every subsequent time I entered the End podium, the client crashed with the same exception.
So it is reproducible on a vanilla 1.20.4 server as well, but only after the first successful return to the Overworld.
I haven't re-tested whether the first return on Paper behaves the same way, so at the moment I can only confirm this behavior on the vanilla server.
Sorry for the confusion. My previous reply was based on only a single test.

[Kichura]

Try adding viaversion 5.11.0 and viabackwards 5.11.0 to %appdata%\.minecraft\config\viafabricplus\jars to override the bundled jars - if it crashes again then something's wrong for sure then.

[NyaYuuru]

I tested it as suggested.
The behavior is unchanged. The first return from the End works normally, but every subsequent return crashes the client with the same exception.

[Kichura]

Can reproduce, however it also affects all 1.20.5-1.20.6 servers.