Sniffers leashed to a happy ghast appear disconnected from their leashes

How to replicate:

1. Spawn an adult Happy Ghast.

2. Give the Happy Ghast a harness.

3. Spawn an adult Sniffer.

4. Leash the Sniffer to the Happy Ghast so that it hangs below from the four-leash configuration.

Expected outcome:

The four leashes the Sniffer is hanging from should connect to each of the four corners of its body.

Actual outcome:

The four leashes the Sniffer is hanging from end in the air above the four corners of its body.