Black Bear cubs and deer(not reindeer,) fawns don't follow their mothers

1. Spawn deer fawns or black bear cubs and an adult
2. see that they don't follow the adult animal

the fawns and black bears should be like other babies and follow their mother

https://cdn.discordapp.com/attachments/565273591151722518/777673990566445097/2020-11-15_17.16.34.png
https://cdn.discordapp.com/attachments/565273591151722518/777673932949946378/2020-11-15_17.16.20.png

Versions:

• Minecraft Version: 1.15.2
• Forge Version: 31.2.5
• Mod Version: 10..0.0.2

Additional context
Add any other context about the problem here.

going to add onto this. Black bear mothers also don't seem to care about their babies. I am seen standing next to her cub in the screenshot below and she doesn't even aggro. its only when I slap the cub she comes after me