When I set effect on any player like this:
/effect @s haste 9999 4
Equipped items stop animating until I clear effect.
Bug manifests on different items for different players.
Comments 2
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.
Quick Links:
📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki
This is intentional, this also happens on Java. The arm swinging animation is too fast that it becomes stationary.