It seems as though when people are boosted and you try using certain homing techniques on them, it will either do a lot less damage. Or it will do negatives and actually add to this persons hp.
For example, I was talking to Yamamoto and I accidentally hit him with my Twin Sage Rasengan and this was the result: Tokani inflicted -410990 damage on Yamamoto!
I looked at his hp, and his boosted hp went up by 410k.. Which is the negative damage I did. So not only did I not hurt him, I actually gave him more hp. This bug seems serious since well people can use it to boost up a persons hp to be near INF and then they can't be killed.
I think the problem could be that tools and homings seem to do less damage on people with high chakra. Since Yamamoto had really high chakra I and when unboosted I hit him for 48k damage. While when he was boosted I healed him for over 400k damage. And same with Shin, who has much less chakra then Yamamoto. When I hit Shin I did about 40k damage. When I should have done about 190k - 230k damage. Please look into this because it seems quite urgent.