Lead attached to some mobs appears slightly offset

When leashing some mobs, the lead appears to be floating slightly offset of the mob's model, visually floating unlike most mobs.

Affected mobs:

• Iron golem
• Rabbit
• Baby polar bear

How to reproduce

1. Get a lead.
2. Summon any of the mentioned mobs.
3. Leash the mob and attach it into a fence.

Expected result
The lead would remain attached inside the mob's body, like other mobs.

Observed result
The lead end appears floating instead.