[b42] disappearing loot on trap?

[snoop]

May not be a bug, but I think all uniques drop a randart? If so, I killed one and didn't get any loot from it. I suspect I killed it on top of a spinning beam trap, but didn't pick anything up when I walked on it. And there's nothing else in the area.

EDIT Ignore... I've seen other rares not drop anything. Coulda sworn the first half dozen all dropped an artifact!