Pandaria Nature's guardian doesn't increase CURRENT health by the correct amount

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Nature' guardian should increase the maximum health pool by 25% and also increase the current health by the same amount, and should not be affected by battle fatigue. Currently, it increases the health pool correctly, but only recovers about 30k hp when it procs.

this is rather hard to observe, since the healing factor comes with the increase in maximum health doesn't appear in the combat log, i've done couple of tests on this by just staring at my health bar.. can somebody test this themselves to confirm? thx.