Well every time I loged out ther gone.where it say affect version it didn't havent there so I'll tell you 1.16.200.51
MCPE-105052
Items get randomly removed
Resolved
Invalid
0
Thank you for your report!
However, this issue is Invalid.
Your Minecraft version is outdated. Please update to the latest version as it includes the newest fixes. If you still have this problem after updating, then please create a new issue.
The issue you're describing is most likely MCPE-102970, which has been fixed in 1.16.200.52 Beta.
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