When you, or any entity, fires an arrow and it hits bamboo if you log out before the arrow despawns when you log back in the arrow has a blue potion effect on it and no longer despawns ever.
I have a ton of them around my base on the realm i play in, and its easy to reproduce.
plant some bamboo, fire an arrow into them, log out. Logging back in the arrows should have blue particle effects and never despawn.
I think the arrows become the uncraftable tipped arrows?
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the main part of the issue is not a dupe (the arrow not despawning), but I can't reproduce in 1.16.2
This issue duplicates MC-107941.
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