» Sat May 12, 2012 8:14 am
That happened once to me -- remove them from your favorites completely, then re-add them from the inventory UI. Then go back to the favorites menu and bind them or w/e. Should clear it up.
Make sure you wait a sec and you keybind one of them and scroll up and down before you keybind the other one, to make sure the UI is very clear on what you're mousing over when you bind the second weapon.