That was actually at the end of HotDQ. I have caught one similar small thing in RoT so far: Bonecarver, the shaman of Oyaviggoton, uses the statblock of a Druid but is said to cast cure wounds on Orcaheart if she gets the chance. The generic Druid statblock doesn't have that spell prepared, so you'll need to swap it out for another.Your examples from HotDQ are well-documented. The only one I've noticed in RoT is Rath being able to concentrate on both fly and invisibility at the same time.
I should have said that it has fewer mistakes and awkward bits that need fixing in ways that are easy to blog about.I'm not sure I'd agree that RoT requires less work to run than HotDQ. The adventure itself is solid, but there are so many side quests embedded in the narrative that you could easily spend 2 or 3 times the amount of prep work.