I do a fair bit of reviewing. Now that the new Review Stats panel is shown on the review page (at least for some of us), I've noticed that doing two things to the same post (e.g. editing and upvoting) seems to count as two actions in the Review Stats.
Does this count as two actions for the purposes of the "200 actioned" criterion for the Reviewer badge? If so, then I'm not sure this is intended behaviour. If not, then the Review Stats might be misleading.
I get from this post that the total row shows the total number of posts reviewed, but that isn't the same as the total number of posts actioned - thus the two criteria for the badge.
EDIT Per the discussion below, this means that the Review Stats are tracking only one part of progress to the badge. People will see their progress to the 1000-reviewed leg of the criteria for the Reviewer badge, but could be misled about their progress to the 200-actioned criterion.