[MCPE-70664] Baby Sea Turtles despawning

Workaround from [Mod] GoldenHelmet

I have created a behavior pack that gives turtles persistence when they hatch from sea turtle eggs: Hatched turtle persistence.mcpack

Note that using this pack will disable achievements in your world.

Baby Sea Turtles are despawning when I travel more than 24 blocks away.

Specific situation:

bred sea turtles at far away beach and harvested eggs
brought eggs back to base to build a farm - made sure entire farm is inside a chunk before I started build
placed hopper minecart (with one hopper underneath track to move items to chest) on a 5x5 track with sand above track
built a 2 high glass wall with fence on top of glass around 5x5 area - only way to get in or out of this area is to break fence and a glass block
placed eggs on sand - AFK'd during the night a few nights to get eggs to hatch
eggs hatched overnight - took a moment to kill hostile mobs, collect drops and experience.
returned immediately to turtle farm - baby turtles are gone
tried again - fed baby turtles sea grass to turn them into adults before I went to collect drops and experience from hostile mobs. Adult turtles are still there when I return and scutes were collected, but still need more
tried again - did not feed baby turtles before I left to collect drops to see if problem happened again. Same issue, baby turtles despawned.

TL:DR - if you feed baby turtles sea grass to grow them into adults the adults won't despawn but the babies will when you walk more than 24 blocks away.