Bees get stuck under stairs and slabs.

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.