Ah you are correct. It's me that wasn't testing properly. The situation has actually been fixed but because lighting has been delayed the updated module hasn't yet been released. So the version I was looking at was the one in my modules folder and not the one actually released. So once lighting gtes released I'll be able to get this one set up for release.
Oh, and as far as the Volo's one goes it doesn't have the extra words - so I'm not sure if that's just for this NPC that there is extra damage.