The bug

Sitting panda cubs other than worried panda cubs seems to be offset. Using the /data command to change the panda cub's MainGene and HiddenGene to different personalities (apart from worried ones) appears to be offset. Attachments below with hitbox shown (F3+B).

How to reproduce

1. Spawn a panda
2. Use this command. (Use it before changing the panda type to worried.)

/weather thunder

3. When reproducing this bug, use these commands on a command block:

Use this command turns an adult panda to a baby panda.

data merge entity @e[type=panda,limit=1] {Age:-1200000,ForcedAge:0}

Use this command first.

data merge entity @e[type=panda,limit=1] {MainGene:"worried",HiddenGene:"worried"}

After that use this. (It can be any panda type.)

data merge entity @e[type=panda,limit=1] {MainGene:"weak",HiddenGene:"weak"}