To reproduce give yourself an item which can be thrown (like a snowball or egg) with the item_model component:
`/give @s snowball[item_model="minecraft:emerald"]`
Then throw said item. Upon breaking the item will release snowball particles, not emerald particles as expected. This behavior is unexpected, as in previous versions CustomModelData would preserve into the projectile particles.
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We're tracking this issue in MC-276764, so this ticket is being resolved and linked as a duplicate.
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Can confirm.
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