After some testing I've noticed that Bees have tendencies to ignore close Bee Hive (5-50 blocks away), and instead they fly to their original Bee Nest (tested on 500-1000 blocks away), no matter how far it is. Small Bees also have tendencies to fly to their parents Nest instead of flying to Hive. To keep them from flying back I had to destroy original Nests. Happens only with naturally generated Bees, tested on two separate worlds, new one, and one updated from 1.14.