I started the evening playing my Minotaur Ranger. I pressed F3 to go into Ranged mode, and then when I pressed F2 to go into Melee mode, nothing. F1 did nothing. F3 did toggle me out of Ranged mode, but F2 still would not take me to Melee mode. I kept hitting keys until I finally did get to Melee... before I was killed, thankfully. I tried several toons with the same results. I did finally notice that if I pressed F1, F2, and F3 simultaneously, it would toggle between all of the trays/modes.
Did I miss a meeting about this? 😉