The behavior: "minecraft:behavior.charge_held_item" doesn't affect bows, tridents, or any chargeable item at all, only crossbows.
How to replicate:
Spawn a pillager
Do /replaceitem entity @e [type=pillager] slot.weapon.mainhand 0 bow
Give them a target
the pillager will still attack but the bow is not animated
Cleaning up old tickets: This ticket has not been updated recently (~1 year+) so is being closed as Cannot Reproduce. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines.
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