I was 3-1 in arena. The tracker displayed my score correctly. I won my next match, so my score was 4-1, but the tracker registered it as 3-2. I wanted to attacked in the end of the match, but before my minion hit the face, my opponent gave up. It was strange. Maybe that bugged the tracker.
Now my score is 4-2, but the tracker registered it as 3-3. My run ended according to the tracker, so I can't use it anymore for my current run.