Don't think has been reported yet, and checked the Shaman Update Bug List that's stickied. And has been out there for a while now so anyways whenever a shaman on the stolen cheese maps: example map 109-112. Whenever the shaman morts on these maps, the timer doesn't change to :20 the map plays the entire 2 minutes and however many seconds they have the skill for.

It was noted a while ago but through testing I couldn't get it to function. Hmmm.