If there's a rare in my current zone with a drop I need, since 1.5.0, when I kill the rare, it disappears from the minilist before I even loot it. If I shift-click the header (assuming it didn't drop the thing I need), the rare correctly reappears in the list with the blue checkmark indicating I've killed it today. Is this a new preference somewhere that I can't find? Thanks.

It's to do with Quest completion I believe, however, the rare shouldn't vanish if you still need the item. I'll try to take a look later tonight if I can remember and see what is happening.

This has been fixed and will be in the next release. Thanks for letting us know!