Guild Wars 2

Recently I leveled a thief and thought about it as a unique feature, but my question is: Is it working as intended that the offhand weapon from a weapon setup automatically is used too in the second one if the second offhand slot is free?

First I was a bit disappointed to not be able to use Pistol #3 because it was replaced by the Pistol/Dagger skill, because my other setup was D/D. I lived and leveled with it, but I’m still curious about it.

Yes, it’s normal.
The current meta PvE condition build make use of this freature to proc Geomancy sigil via weapon swap while keeping only daggers in hand (dagger/empty – empty/dagger)

Thank you very much for the answer :-)