Game mode: Online
After upgrading my Set Altar to 3 tier, it despawned and dropped all my poison antidotes to the ground in a bag. I was able to loot the bags, but I lost my altar and all the work I put into it get it to tier 3. Note: This altar wasn’t on a foundation. I don’t know if that matters since it disappeared immediately after upgrading.
Steps on how to reproduce issue:
1.Upgrade Set Altar to 3 tier