Anti-Creaking Mod
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Just an idea, no clue if it's practical or not.
So creaking despawn if you remain in their hitbox, this could be used in a mod to find creaking within, say 4 blocks, and stick the player in their hitbox to make them despawn.
Unlikely to work on servers that do movement checks, so there might be some alternative ways of doing this, like only moving the hitbox, and not the player position, if that is even possible.
Does that sound like a good idea?
EDIT:
Filter out named Creakings, they don't despawn.