On http://en.wikipedia.org/w/index.php?title=Special:ArticleFeedbackv5/Golden-crowned_Sparrow&ref=cta
Under "More filters" FF shows only Featured/Helpful/All Visible. Chromes shows those plus 13 more below a dotted line.
No screen shot available because cursor tracks selections in that selectbox, preventing taking a screen shot.
Version: master
Severity: critical