If the DeathLootTable of the spawner's entity is invalid it will fps drop

[0-9]

Expected behavior

Observed/Actual behavior

Steps/models to reproduce

/give @p spawner{BlockEntityTag:{SpawnData:{entity:{id:"minecraft:allay",DeathLootTable:"^"}}}} 1
https://github.com/PaperMC/Paper/assets/98388174/86c812ca-a487-462c-a047-92cff55b5827

Plugin and Datapack List

datapack: vanilla and file/bukkit (world)
plugins: none

Paper version

This server is running Paper version git-Paper-373 (MC: 1.20.4) (Implementing API version 1.20.4-R0.1-SNAPSHOT) (Git: b2a6d57)
You are running the latest version
Previous version: git-Paper-318 (MC: 1.20.2)

Other

No response

[electronicboy]

paper has 0 control over the client, so I'm not really sure how this is our issue

[kennytv]

You can only get spawners with custom nbt as an operator, at that point you have better ways of lagging or crashing clients, so this is a non-issue

[MiniDigger]

you should instead file a bug with mojang