I verified after posted the thread I started 20 minutes ago, there is something wonky with the buff and spell power cost in Chaos Descending Solos. I test in Vegarlson: Council and Doomfire: Enkindled Towers. I had power for 2 single attacks, a heal cost all my power as did a blue backed spell. I was playing Fury for this if it affects any variables. Thanks for your attention to this my Dev friends!
Were you curing all detriments promptly? They were pretty bad about sucking power if not cured before they ticked.
chrol said it will be fixed in other thread its a bug with fount of power, doesnt protect against mortal feast