Was attempting to tame a horse with 2 friends. Horse was at 95 and should have been the last taming beating today.
We do the same thing everytime, all 3 of us agro it then click the olive branch and take turns hitting slowing down when we get towards 200 total damage (for horses anyway) to make sure we don't accidentally hit it after the tamining hit.
Anyway, when we got the the point that the horse should have been tamed, we got a fat yellow zero, literally saw the yellow taming number display zero and the horse didn't de-agro any of us.
TLDR: killed a horse that should have been tamed today, feels bad, definitely felt like a bug happened. Never seen a zero taming number display before.