I am using this rune on my Cleric Druid. When I am outside the raid in other maps and even at the start of the raid my healing power includes the healing from the rune, but after we’ve started the first boss it no longer includes the healing from the rune – it is exactly 175 less. It is fine for the first 3 trash mobs. If I re-log it sets it back to normal. I don’t know whether this happens after a death or after a start of a fight, as I always check it before a re-try. We have only been doing first boss. If I use a glyph the healing power does go up by 500. In the 2nd image I have delicious rice balls on me for an extra 100 HP.
http://imgur.com/a/G4DJ7
[TGA]The Gamers Asylum