If the player breaks a bee hive or bee nest with a bee inside, without the silk touch enchantment, and the front face of the bee hive/nest has a block, the bees won't get out of the bee hive/nest. The bee hive/nest dropped won't contain the bees either. In result, the bees will have dissapeared.
Steps to reproduce:
Place a bee hive or bee nest and get a bee inside it.
Place a block in front of the bee hive or bee nest, just next to its front face.
Break the bee hive or bee nest without the silk touch enchantment.
Result: No bees are spawned/get out of the bee hive or bee nest
Expected result: Bees get out of the bee hive or bee nest
Duplicate of MC-169157. This has already been fixed for the next release.