Guild Wars 2

I am mainhanding a sword with Superior Sigil of Battle, with a different offhand in each weapon set (sword/sword and sword/focus).

The issue I’ve run into is that when swapping weapon sets in combat, I will sometimes be unable to get might on swap. This issue lasts for the entirety of that particular combat; in other words, I will never get the might when I swap until I break combat and enter another fight. By the same token, if I am getting might on swap, it will never NOT give me might for that combat on every swap.

I thought it might be related to which set the weapon is equipped and which set I start with at the beginning of combat, but it doesn’t seem to make a difference in whether the sigil works for that combat or not.

For reference, I am a mesmer with my offhand focus using Sigil of Fire and my offhand sword using Sigil of Air, with my mainhand sword equipped in the first weapon set alongside the focus.

On critical hit, and on weapon swap sigils share the same cooldown.
Try unequipping your offhand weapons and see if that makes a difference.