Guild Wars 2

My thief has pistol in main and empty off hand. Instead of getting [Repeater] at slot 3, i get abilities from dagger-offhand.

It might be worth noting that I, indeed, have off-hand dagger in other weapon slot.

I tried swapping, re-logging, and re-equipping weapons. I still have dagger abilities, while not wearing a dagger!

Also, for example, when I wield only pistol (in off-hand) i get abilities, like that I have main-hand dagger. Something is amiss.

imo thats intended, same on other classes too. e.g. when i equip 1 mainhand and 2 offhands, same 1 mainhand is used for both weapons sets