If a player who dies when gamerule KeepInventory is set to true does not respawn, their items will dissapear if gamerule KeepInventory is set to false prior to respawning. Relogging does not fix the issue.
Example: Player 1 dies(KeepInventory=True), Player 1 does not click Respawn, Player 2 sets KeepInventory=False, Player 1 respawns and all of Player 1's items disappear.
Linked issues
Comments 2
Hello! This appears to be a duplicate of MC-111467.
This is an intentional feature because items on a player are only registered upon respawn.