While building, I like to tie animals to posts, and kill the animal, leaving the knot/rope behind. It looks cool. This functioned before the snapshots today.
It still works, but the 'entity.LeashKnot.name' flickers, and is sometimes visible, sometimes knot. [ Pun intended... 😉 ]
There's no pressing need for this to be fixed, just thought I'd let you know!
This was on a server.