Riding an horse attached to the fence

Riding an horse attached to the fence with leash.

Describe the bug:
When i ride an horse attached at fence the leash should brake after a while, but when the leash breaks it remains attached to the fence. Look at the screenshots.

Steps to Reproduce:
1. Attach an horse to the fence using a leash
2. Ride the horse WITHOUT removing the leash and get away from the fence
3. Wait until the leash breaks.