I doubt it will stop the infamous heal bug. I think this is as a result of the damage being caculated as negative so it add to the bosses health instead of reducing it, so technically the boss it not healing.
After the last few years with multiple bug reports, I don't think the devs are bothering to look into it. They would rather spend their time fixing simple bugs with the character animation which are more noticable, but don't effect game play rather than fixing a real bug which does impact the game.