Immortal beastmaster/infinite ward/HP

Hi, my character becomes immortal with infinite ward, no damage can harm me at all/ward or HP doesn’t move. I don’t know what is causing the bug, but it happened several times. Relogging fixes the issue. What I do is kill regulary Uber Uberoth and when next I enter regular mono I have infinite ward (char sheet shows negative ward).
screenshot:
https://imgur.com/a/7hveBRW

this is OFFLINE character and NO, I don’t use any type of cheat engine before you say so. If more info is needed please contact me.