Appears the same in 1.18.30
Maybe your phone has too much storage that when MC tries to save your world, it has no storage, so it crashes. I'm giving ideas.
This is the same thing with xbox 1.16.0 custom skins (using skin pack method) and character skins wont load right
I feel you minecraft xbox 1.16 is like bugrock edition like some texture packs crash your game randomly we need A BIG HOT-FIX for xbox one quickly we need to fix game I think 1.14.60 was way more nice!
What I'm tryna say is every time u close game and reopen it skin are broken and they dont even reload i tried turning off allow trusted skins and that helps also
This is probably a duplicate
This also happened to me in 1.15 and 1.16 beta when I tried to test if you fixed it.
Same in 1.18.31