The bug

When trying to sleep in a bed in the nether (or the end) that is occupied by a villager, the bed explodes. This might be intended.

To reproduce

1. Go into the nether or the end
2. Place a bed
3. Spawn a villager
4. Run /time set midnight
5. The villager will go to sleep (MC-146515)
6. The bed won't explode (MC-145964)
7. Try to sleep in the bed
8. The bed will explode

Original description

Set time to midnight using /time set midnight.

Spawn a villager in the overworld, next to a bed and worksite block. Villager gets its profession and gets into bed. Bed blockstate changes, and bed is marked occupied. Players cannot enter the bed.

Navigate to nether (I used /execute in... & tp); repeat the process. Bed still changes to the occupied state. Villager does not cause a bedsplosion. If a player attempts to enter the bed, bedsplosion occurs.

Expected outcome:
Either villagers should cause a bedsplosion in the nether, or players should be blocked from causing the bedsplosion when a villager is in a bed in the nether.

I assume this same behavior is exhibited in the end.