The bug
Fishing bobbers are entities but cannot be summoned. You can tell they are by looking in your debug screen when it is just you and a fishing bobber in the world. It will say there are two entities.
Steps to reproduce
1. /summon fishing_bobber
❌ You get an error: "Unknown entity: minecraft:fishing_bobber"
Additional Information
This might be considered a feature request but being that you can summon leash knots (for some reason) and that MC-30568 was valid this should be considered at the very least.
Thank you for your report!
We're tracking this issue in MC-144632, so this ticket is being resolved and linked as a duplicate.
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