As I was playing survival on a flat world, I noticed a bat (it spawned during the night) flying around in the sitting position without its flying animation.
I checked with my friend who was on the server, and the bat animation was not working for him either.
Possibly multiplayer-only.
Unfortunately, I don't have a screenshot of it (and, frankly, I'm too lazy to relaunch Minecraft to get one).
Recreate this bug by creating a flat world and spawning a bat. (It might only happen with naturally-spawning bats, though.)
Basically, MCCE-5302 is happening on Java Edition.
Environment
Windows 11 Home 22621.674
HP Pavillion Desktop TP01-1214
Java Version 8 Update 331 (build 1.8.0_331-b09)
Thank you for your report!
We're tracking this issue in MC-256882, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki