I'm using Firefox 60.0.1 x64 on Windows 7 SP1.
I have enabled Accessibility in Firefox.
But Accessibility only works for Firefox configuration pages(such as about:config about:support ...), not work for sites user opened(such as www.google.com).
I use Microsoft's tool Inspect. Inspect can see the UI elements on page about:support, but can't see the UI elements on sites user opened. It works for older versions(<=56).
