Guild Wars 2

In “Liberating Apatia” Trahearne gets stuck on the step “Fight your way into the krait tower.”

(If I try to talk to Trahearne he just says to stay clear of the water.)

It appears what happened was a krait in the last group before arriving at the tower did not spawn properly, it was still in the water and was yellow. If I attacked it would not take any damage (and would then apply the toxic water debuff on me).

I reset the mission and it’s now progressing.