Attribute modifiers don't reset after death 1.21.1

[FurrO2]

Expected behavior

1. the player have an attribute ( like this one for exemple : /attribute @p minecraft:generic.max_health modifier add 1 10 add_value
2. the player died
3. the attribute is reset because in this case, the attribute is not the Base attribute

here an exemple of vanilla 1.21.1

https://youtu.be/hHGpRTtGZJA

Observed/Actual behavior

1. the player have an attribute ( like this one for exemple : /attribute @p minecraft:generic.max_health modifier add 1 10 add_value
2. the player died
3. the attribute still active ( and somes plugins are affected by that )

Steps/models to reproduce

how to make the bug:

1. do that command: /attribute @p minecraft:generic.max_health modifier add 1 10 add_value
2. play in gamemode survival and do some /kill @p
3. the generic.max_health modifier is not reset and that is the bug

Plugin and Datapack List

no plugins

Paper version

This server is running Paper version 1.21.1-119-master@7cd4f2c (2024-10-03T15:19:34Z) (Implementing API version 1.21.1-R0.1-SNAPSHOT)

Other

No response

[masmc05]

Worth mentioning, 24w20a fixed base values not being copied on death, attribute modifiers should still be reset on death to be like in vanilla

[electronicboy]

https://minecraft.wiki/w/Java_Edition_24w33a 1.21.2 snapshot, also changes this further...
actually, this is a non factor, this only affects living respawns, something spigot basically opted us out of