Updating to 1.17.33 caused all mobs near where the player logged off to despawn

Updating to 1.17.33 caused all the mobs near my base (a shulker, my 2 pet parrots I have had for EIGHT MONTHS, and my pet cat.) all of them despawned when I updated. Not only that but my friends horse, my horse, and 30 tropical fish in my aquarium despawned. I had all my pets I think before updating to 1.17.33 other than that it’s then related to MCPE-21416