Guild Wars 2

I have the following weapon setting:

(1a) Scepter, (1b) empty, (2a) Sword, (2b) Torch.

But, in the game, I have Scepter+Torch or Sword+Torch. How to get that Scepter+empty case?

If you have an empty weapon slot on one weapon set that is filled on the second, the game will use the weapon equipped in the second weapon slot in your first set as well so you don’t end up with empty skills.

Not a bug, it’s intended, and useful too.

It is a pain for thieves though since they have skills that require no offhand weapons.

Then I suggest to add a toggle switch for its behaviour. Now I have to move the torch to inventory.

If I recall correctly, that extra Skill was added because all the useful third-slot skills for Thief come with the Offhand, and you only start the game with a Main Hand weapon.

Fair dues if you use that skill, and can make it work better than the extra options an Offhand provides – but it’s essentially a placeholder.