When flying around, bees get stuck inside bottom half slabs used in roofs. It appears to only affect half slabs used in roofs and elsewhere above ground - half slabs on the ground do not cause an issue.
The slab must be broken by the player to release the bees, otherwise they do not find a way out, even after multiple in game days.
Steps to Reproduce:
Slabs:
Build this:
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Spawn a bee in between the slabs
Doors:
Build this:
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Close one of the doors and spawn a bee inside
When the bee starts moving towards the open door, close it
Open the door next to the bee
Video:
[media]Related issues
is duplicated by
Attachments
Comments


Bees also get stuck on a variety of other blocks as well, including: Walls, fences, glass panes, iron bars, end rods, and bamboo.
So they pretty much have the same pathfinding issues as all other mobs, with the added bonus of hovering mid air, being able to get stuck in even more locations.
Possibly related issues could include:
bamboo pathfinding issues: MCPE-46805
Short blocks messing with pathfinding: MCPE-47075

Affects 1.16.0.55.

Should the fix/version be changed back to "None"?

In 1.18.12, if the bees are in a 1x1 column (height doesn't matter), the bees sometimes get stuck on each other, and are unable to path back to the hive.

Allay too gets stuck
In windows
Halfslabs
Stairs
Hoppers
Pistons
Frances
Iron bar's
Doors
And almost all the time in one block wide holes

Still occurs to this day

Affects 1.19.22
Most easily reproducible by placing a lower slab over an upper slab, spawning bee in between, & holding flower.
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I have noticed a similar issue for a while now, too. My report was labeled a duplicate of this issue. But here's what I wrote just so all the info's in the same place (already attached my screen shot):
Bees are constantly getting stuck underneath stair blocks and slab blocks. They fly underneath and then just get stuck. They bob up and down, and will even rotate, but they do not move side to side or forwards. If I remove the block the bee will fly away (going to a flower or back to their nest/hive). Sometimes I can "push" them out by constantly running or jumping into them.

Just added a video captured with Windows Gamebar showing a bee stuck under some slabs. I can push the bee around but it moves back underneath that same slab. Once I break the slab it flies off (in this case to a flower).

Still occurs as of 1.20.30

Bees also get stuck on chains, and likely similar blocks like lightning rods.

This issue affects any non-full block, including trapdoors, farmland, slabs, stairs, chains, etc. Relogging or breaking the block is the only resolution until a proper fix is put out. Affects version v1.21.0.

still affects 1.21.62 for me. feels cruical because of the fact bees get caught on campfires and i cannot get them out.