Mobs with a set sleeping position can walk/fly around freely while in a lying position

The mob's AI still allows them to move freely while sleeping, causing them to walk around while lying down, which appears peculiar. 

 

Reproduction steps

1. Position a bed with its foot at coordinates 0 -60 18

2. /summon minecraft:creeper ~ ~ ~ {SleepingX:-1,SleepingY:-60,SleepingZ:18}

   (You have the flexibility to modify the command coordinates if you've positioned the bed elsewhere.)

3. Be in survival mode

Observed: The creeper will pursue you while lying down.
Expected: The creeper should not pursue because it is sleeping.