Minecraft bug

Hello, I'm on Minecraft bedrock Xbox one 1.16 Bata, and I am a heavy Iplayer but my girlfriend plays with me. When load in my player 2 (girlfriends account) it sometimes will load with 2 compleatly diffenet invantories then the one I just saved with (clearing ivantory and ender chest), as if shes a new player. Her xp is still there andiand also spawns at our base and not at spawn as if I used this person(spawn is over 1000 blocks away).. it will randomly switch between the two inventories in between loading world's.  Help I keep looking whole invantories and ender chests, along with my elytra and enchanted netherite. Also we are one strong wifi connection. P.s. loving the new Nether!