Not sure if this has been reported, but it appears that Mercy Stroke;s healing attribute does not work on the adds in Alex-1 Savage

This is specific to the adds during the boss fight. I have observed that, whenever I drag my add to the laser, there are times where I time Mercy Stroke to be the killing blow, so that I can recover some HP. Instead I have noticed that Mercy Stroke does not seem to heal when it is the killing blow on those adds. I not see any healing numbers scroll up, nor do I see my HP bar move up from getting a heal.

Outside of Alex I have conditioned myself to see when Mercy Stroke will heal and when it will not when it comes to low health monsters. Considering the small HP pool of the mob, using Mercy Stroke as the killing blow isn't really difficult. Whether it is intended no heal is given within Savage is unknown.