Sleeping villagers exit their beds when their job block is removed

The Bug:

Sleeping villagers exit their beds when their job block is removed.

Steps to Reproduce:

1. Place down a bed along with a job block that villagers can assign themselves to.
2. Summon a villager and allow it to assign itself to the job block.
3. Set the time to "night" and wait for the villager to enter its bed.
4. Break the villager's job block and watch the villager closely as you do this.
5. Take note as to whether or not sleeping villagers exit their beds when their job block is removed.

Observed Behavior:

Sleeping villagers exit their beds.

Expected Behavior:

Sleeping villagers would not exit their beds when their job block is removed.