[quote]This may not have happened often or to everyone, but for those of us who don't pay to much attention to our inventory might relate to this same situation. Just beat Aksis on Heroic Mode and when to open the Heroic chest, but couldn't because I was out of cache keys, but had plenty of fragments. So I go to build a key not realizing my consumables are full so it sent the cache key to the postmaster. So I thought no big deal I'll just delete something out of my consumables and form another one right now. To my dismay nothing. The cache keys were stacking in the postmaster even though I had room in my inventory now. So I lost out on the Heroic chest due to that, because fireteam joining is disabled after the boss is defeated. To me it is looking like this is a very big oversight. Would like to see this fixed. I got only 1 heroic drop now because of that. Ruins all the excitement of a first Heroic mode beat of this when getting higher light gear is getting tougher anyway.[/quote] Same happened to me, real annoying.