Hi! In Diablo IV, i have encountered a problem with drops. Yersterday, i was doing some bosses. While i was at Andariel, some drops remained on the ground, as I had my inventory full. An ancestral Mythic ring dropped, and i continued on, without picking it up. When i went to town afterwards, some of the dropped items came to my stash. This is by design so far… 
but when i returned to Andariel, i still had some drops on the ground, but some were missing, including the mythical… Is this suposed to be by design too? I mean, some drops remained, some dissapeared???