This happened with the char in the 1st slot, HUmar Daniel with Redria. Guild Card # is on the side. Time of occurrence was around 3PM on the 12th, Arizona standard time.
So I tried to run Hard Dark Falz in Towards The Future with some people and I noticed that Grants was one-offing the two teammates I was working with. So once we teleport back to Pioneer 2, I go get a Resist/Light, Resist/Saint (all I could spare) and 2 AddSlots (just in case). After an awkward pause, they said they can't pick up the items. So I try to pick them up myself.
A green cursor would show up around the items, but when I pressed the proper button, they sorta just remained there. I tried dropping some Antidotes and picking them back up, which worked, but the 4 items in question were still stuck on the floor.
I don't have screenshots, mainly because I was frustrated at the fact that I lost these items and closed the game shortly thereafter. I'm not worried about the items (I can farm the AddSlots again if necessary, char's a Redria and it's not like Resist/Saints are rare), I just hope this sort of stuff doesn't happen again when, say, someone's trading over rare weapons and such,