The anchor link in the sidebar under On This Page > Edit Dialog > List Settings Tab > Search is broken. The href is pointing to "#search" which is an id on the wrapper div for that section, but it looks like CSS and possibly something more global is using the same id, which I'm guessing, is conflicting (who uses an id in a stylesheet anyway!? ;-) ). Possible solution would be to use a different id in the div wrapper and href.
As as side note, sidebar won't appear unless your viewport is > 1400px.
Issue in help/using/list.md
The anchor link in the sidebar under On This Page > Edit Dialog > List Settings Tab > Search is broken. The href is pointing to "#search" which is an id on the wrapper div for that section, but it looks like CSS and possibly something more global is using the same id, which I'm guessing, is conflicting (who uses an id in a stylesheet anyway!? ;-) ). Possible solution would be to use a different id in the div wrapper and href.
As as side note, sidebar won't appear unless your viewport is > 1400px.