The pivot point of the head of the new bats is different from that of Bedrock's
The animation of the bat's neck is different.
This problem is caused by the different pivots of the model's heads.
See the following images:
Java Edition{}
{}
Bedrock Edition

2023-10-29, 02:06 PM
2023-10-31, 02:55 PM
2023-10-31, 02:55 PM
4
3