When moved by commands, fishing bobbers do not accurately display their position. They are still moved by the commands as expected, however it does not appear this way.
I have attached 2 videos displaying this behavior; in one, I am teleporting the bobber, and in the other, I am setting its motion. I use a command block to generate particles at the bobber's current location to show its actual position.
Note: I recorded these videos while running OptiFine, however the issue still occurs without it.
Thank you for your report!
However, this issue is Invalid.
Your game, launcher or server is modified.
If you can reproduce the issue in a vanilla environment, please recreate the issue.
Any non-standard client/server/launcher build needs to be taken up with the appropriate team, not Mojang.
Any plugin issues need to be addressed to the creator of the plugin or resource pack.
If you have problems on large servers, such as The Hive and Hypixel, please contact them first as they run modified server software.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki