This is still going on for me just yesterday I lost a whole shulker box filled with good loot about 3 days ago on my friend's multiplayer realm bedrock 1.18 and when I went through the end portal my game disconnected. I rejoined and lost only that 1 shulker box and I have no clue why because I just put it in a chest during that time and when I check all my chests it is still missing.
This is still going on for me just yesterday I lost a whole shulker box filled with good loot about 3 days ago on my friend's multiplayer realm bedrock 1.18 and when I went through the end portal my game disconnected. I rejoined and lost only that 1 shulker box and I have no clue why because I just put it in a chest during that time and when I check all my chests it is still missing.