The bug
If you interact (right-click by default) with a leash knot to break it or attach additional leads, it doesn't make any sound.
How to reproduce
Use a lead to leash an entity to a fence. Notice the sound that it makes.
Leash another entity to the same fence (right-click).
→ ❌ This time there is no soundPunch the leash knot, breaking it. Notice the sound that it makes.
Leash another entity to the fence.
This time, break it using interact (right-click).
→ ❌ This time there is no sound
Linked issues
Attachments
Comments
Updated a bit to include a very similar case in which the sound is skipped
Affects 19w45a
Affects 1.15-pre1
Relates to MC-93802

I wouldn't say there is enough in common for it to be marked as related.

Affects 1.15.1. Can I request ownership of this ticket?
Can confirm in 21w06a.
Can confirm in 1.16.5 and 21w08b.
Can confirm in 1.17.1.
Can confirm in 1.19.
In 24w12a.
I can confirm for 18w44a