I had more than 100 points on algorithm at SO, and bronze badge. Suddenly today I have only 90 pts on the tag and badge is lost! This must be a bug, because:
when I filter my answers under this tag, the sum of the scores is 103! And the newest scored answer is from last year.
Data Explorer is from June 25th and it is still correct: see:
My reputation is intact (or at least I have not observed lowering of it).