Days since AoR seem off in Canada PR Tracker?

I’ve been using the Canada PR tracker a lot to get updates on other folks’ applications, but as of this week it seems the days since AoR count is off - for example, I got my AoR on May 5 2022, which was 112 days ago, but the tracker says 104. Same for some other cases I spot-checked. Just me, or are others seeing a discrepancy too? I’ve sent an email to the admin just in case it was a backend issue.