Greetings :D
Realm tested on: x100
Date: November 19, 2015.
Priority: I don't know the criteria of prioritizing, if a skilled technical support (i.e. Furmetal) could do it, it would be appreciated :D
Description: Shamans have http://www.db.pandawow.me?spell=116956/grace-of-air buff as a passive, so if a paladin uses http://www.db.pandawow.me?spell=19740/blessing-of-might it will replace shaman's buff which is okay; but, when changing to http://www.db.pandawow.me?spell=20217/blessing-of-kings, http://www.db.pandawow.me?spell=19740/blessing-of-might will be gone, in that case http://www.db.pandawow.me?spell=116956/grace-of-air should be activated again, it is not, we lose around 10% of mastery due to this bug/glitch.
How it should work: if no mastery buff is activated, http://www.db.pandawow.me?spell=116956/grace-of-air should be activated again.
Proof: https://www.youtube.com/watch?v=DeRvZm8DfY4
Special thanks to Fuzy for helping me.