The burst heal on Rally sometimes fails to heal on the final burst heal when it expires or is activated. It is understood that if you activate it repeatedly that the burst heal will be tiny or insignificant, this is not what is being observed. The actual burst heal of a charged Rally completely fails to heal WHATSOEVER.
Possible Causes: The most likely cause of this is that evasion abilities such as blur (mirage/double take) and evasion (shuffle/etc) cause the final heal to be dodged 20% of the time. This was a bug several patches ago that was affecting the HOT portion of Rally and was supposedly fixed, but appears to STILL be affecting the burst heal.
PLEASE LOOK INTO THIS: THANKYOU!
Ali Dreadsabre -Necromancer
Ali Sabre -Nightblade