I'm using Chrome canary and this check mark has appeared. I don't know why it appeared and what it means? Page is bookmarked but others from here are too but no mark; page isn't saved for offline reading. Any thoughts? Also how do I remove it?! (Click image to enlarge)
After unsuccessfully trying rather complex fixes suggested on google forums, I ended up clicking on the three dots next to the search bar, going to downloads and searching the site with the checkmark (using the magnifying glass at the top of the pg.) Clicked the three dots next to the site download listing and clicked delete, and the annoying tick was gone.