About:support or troubleshooting information page is one stop place where you can check system add-ons installed in Firefox browser, Refresh browser if you’ve any issues with it, check Firefox version, open Profile folder and see the Profile path.
By visiting about:support page, you can know Firefox has Multi-process or e10s support and accessibility enabled or not and other information.
All the information on this page is divided into sections. In the Firefox 59 Nightly, Mozilla has added Security Software section, that fetches information from Windows Security Center on Windows 8/8.1 and Windows 10 and displays the data about Antivirus, Antispyware and Firewall installed on your computer.
In version 59, Firefox displays search suggestions first, followed by suggestions from history and open tabs, which you change by unchecking a checkbox in Search preferences.
For more details, read: Firefox 59 : Show History Suggestions first in address bar results
If you want to know more about changes coming in Firefox 59, check out the below links
- Firefox 59 offers New Settings to disable Notifications
- Firefox 59: Add-ons Manager Search to Use AMO Search
- Firefox 59 : Mozilla removes Firefox Health Report