Created attachment 8791866 [details] [diff] [review] patch Bug 1297976 added aria-label to the button, but not only screen reader users may wonder what this button does. It should have a tooltip (which makes aria-label unnecessary.)
Pushed by firstname.lastname@example.org: https://hg.mozilla.org/integration/mozilla-inbound/rev/782176814d22 Add tooltip to awesomebar results popup's search settings button. r=florian
User Agent Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:51.0) Gecko/20100101 Firefox/51.0 Build ID 20160918030408 Verified this on Nightly 51 (2016-09-18) on Windows 10, Mac 10.10 and Ubuntu 16.04. Search settings button now has a tooltip.