Forum:Dropped items disappear

Hi,

I made an area for farming goblin scouts and king slime. I surrounded myself with lava. I poured two buckets of lava into 13-tile wide and 1-tile high hole. After a while there were about 7 tattered clothes in the lava. I went afk for about 5 mins, and there were only 4 tattered clothes left. Why did loot disappear?

Thanks,

Mike