GNOME Bugzilla – Bug 708482
Close and Back buttons need an accessible name
Last modified: 2013-09-20 19:54:34 UTC
The "x" button in the upper right corner of the window lacks an accessible name. As a result, when an Orca user gives it focus Orca can only present it as "push button," leaving the user to guess what the button does.
Turns out this is true for the back button as well.