Ok The Bug Really Started Since 1.5 Or Something Similar Especially On Multiplayer Where I And My Friends Play On A Survival World And Sometimes When The Host Enters The World The First Thing He Sees Is The "You Died" Screen When And When He Respawns He Spawns on The World Spawn So He Loses All His Items

The Rest Of Us Have A Similar Problem Is That Sometimes When We Enter The World It Treats Us As We Didn't Enter This World Before So We Lose Our Progress

Additional Info (Might Help You Fix The Bug)

The Multiplayer Problem Is More Likely To Be Associated With The Xbox Live As In My Case We Have A Slow Internet

We Sometimes Play On LAN Network So Keep That In Mind ( This is When The Weird Stuff Happens )

Thanks