Minecraft 1.18 Bees Dispawn

I have been playing all the snapshots for version 1.18 and I noticed that in the last two versions (rcv3 and rcv4) my bees that were more than 50 all dispawned, I went to get more and they returned to dispawn, I need the bees to finish the floor of my house but this is difficult haha ​​thanks for your attention I hope to receive some feedback !! Thanks for everything you've done and thanks for making my life better!