Yesterday we investigated an issue reported by players where raid bosses on Progression Servers were taking less damage from direct damage and damage over time spells. We have uncovered that this issue was the result of two bugs, one of which has been fixed and one that we are looking to fix in our next patch. The first bug, which has been fixed, is that spell damage was not being reported accurately. For example, a 300 damage Banestrike was never actually hitting Lord Inquisitor Seru for 210. The damage being reported as 210 was incorrect. It turns out that the real value is 147, and this is what you are now seeing. However, the second bug is that spell guard effects are currently twice as effective as they are supposed to be. Spell parsers will show that Mitigation of the Mighty III has a 30% spell damage reduction, so the real damage output should be 210. However, the spell damage reduction is being called twice, so the NPC has only been taking 147 damage (and was inaccurately showing players that 210 damage was being dealt). Damage is now being displayed accurately, but we will be addressing the outstanding bug and adjusting damage values so that there will be no change in kill times or effectiveness in the next update.