Summary:
Bees inside a nest/hive disappear when the nest/hive is destroyed by an explosion.

This bug also existed in Java Edition and was fixed in 19w40a: MC-159843.

Steps to Reproduce:

1. Set the time to night
2. Place a bee nest/hive
3. Spawn 3 bees
4. Place TNT near the nest/hive
5. Ignite the TNT with a flint and steel

Observed Results:
The bee nest/hive is destroyed, and the bees inside disappear.

Expected Results:
The bees leave their nest/hive as soon as it is destroyed.

Videos:
Bedrock:
Minecraft 2022-02-11 11-56-13.mp4

Java:
Minecraft 1.18.1 - Singleplayer 2022-02-11 12-46-59.mp4