When I visit my profile page, I see "helpful flags 1" where "1" is a hyperlink to the "Flagging Summary" page.
So, when I click "1", I get the "Flagging Summary" page and I see the page mostly empty. What does it mean?
Screenshot included below:
This is a specific instance of the bug "Flag counters not shown although I had flagged some comments": You have raised one helpful flag on a comment, and no flags on other posts (questions/answers). Comment flags are not listed individually, but their total number should be shown on the right-hand side below "Your flagging history". However due to the above-mentioned bug, the flagging summary page is completely empty as long as you haven't flagged at least one non-comment post.
Thanks for bringing this issue up. This profile section does not exist in the current build of our sites, and so this is no longer an issue. :)