If you leash a mob to a fence while not holding a lead item then you won't be able to break the leash knot.
If the fence is broken, the leash knot texture hovers in the air indefinitely, and the lead breaks a few seconds later. Re-entering the world fixes the leash knot.
Linked issues
is duplicated by 1
Attachments
Comments 6
Relates to MC-108225
Happens when you leash a mob to a fence while not holding a leash knot.
Works fine for me.