Using several leads on a villager causes the leads to delete

[BreeadHead]

Server this occurred in (in the player tab list):

main

World this occurred in (in the player tab list):

main

The coordinates or a notable location at/near the glitch (if applicable):

N/A

My Minecraft username:

n0TaN00b473

What I was doing when the glitch occurred:

Trying to move some villagers into a building, and I accidently clicked twice on a villager

What happened:

One of my leads disappeared.

What was supposed to happen:

It should've not let me do that or just drop the lead when I did that.

Any additional details that should be noted (pictures/videos of it happening, etc):

n o