When I obtained my third legendary, AMR BiB decided to change which two I should equip for my main spec. For one of my off specs, it likes a different pair so it looks like I need to keep all three in my bags.
Activate xx Spec and Equip Gear is trying to equip the third legendary before removing the second so I get an error that I can only equip two. It needs to be made smarter so that it does remove before equip for legendaries.
Anvilmar-Aiggan is the character in question.