Guild Wars 2

The necromancer spell, “Spectral Wall” is described as providing 10 stacks of Vulnerability (10% increased incoming damage) to enemies that pass through it, but upon testing on multiple enemy types multiple times, it only shows as applying 3 stacks (3%) of the vulnerability condition.

The secondary effect of applying the Protection boon to allies works just fine, durations seem fine, just the intensity of the vulnerability seems to be broken.

I play human necromancer on Anvil Rock, was testing this in Kessex Hills on drakes, basilisks, bandits, moas, skales, and other things.

Second. I also noticed this problem.