Greetings!
I downloaded the new update (7/7/15) today, and logged in.
Shortly there after I noticed that when I hit 1 (Hotbar 1 Slot 1) on my keyboard, it also presses F1 (Hotbar 3 Slot 3)
and it does this with all 12 of my first hotbar. Same happens when I hit F1 as the 1 key is also pressed.
I tried restarting the game, and it didn't fix it.
It works fine if I click on it.
Any ideas?