Breaking a fence that has a mob tied to it keeps the lead floating for a few seconds

I was doing speed tests with the horses, donkeys and mules to see which would be best for a long distance trip in survival mode, but when breaking the wooden fence the noose continued to hold the crowd in "air" (for a short period of time).

This happens to any mob caught in the snare and grappled to a fence (and any kind of fence).