On MSO Review Page, my avatar has no hat where the "recent reviews" are listed on that page.
The hat is working fine everywhere else, including on the stats pages, eg:
Where it's missing seemingly doesn't even attempt to show it, as the
div class="hat" is not in the code.
Issue is the same for Stack Overflow.
stackoverflow.com/review page only, ok on all other pages including the stats pages.
Not perturbed at all by it, but thought I'd report in case it helps (with code management or whatever).