I encountered a bug in Halls of Infusion in the 2nd dragon pack right before the 3rd boss and the bug persisted until I logged out and logged back in.
With the new Holy Paladin talents, using Divine Toll or Avenging Wrath will make your next 2 holy shocks cast an additional 2 times.
For some reason, I would use Divine Toll or Avenging Wrath and the extra holy shocks wouldn’t happen. I’d have the buff, the ability icon on my hotbar is glowing, but I got no extra Holy Shocks and it was as though I didn’t have the talent at all. It worked fine up until those dragons, not sure exactly what caused it to start bugging out.