Created attachment 1120073 [details] Screenshot showing comfortaa being used instead of open sans Description of problem: When using Open Sans Regular as the Interface font set by gnome-tweak-tool, firefox 44 does not draw this font, and instead renders comfortaa Version-Release number of selected component (if applicable): 44 How reproducible: 100% Steps to Reproduce: 1. Install brand new fedora 23. 2. Install open-sans-fonts. 3. ensure firefox upgraded to 44 4. run `gsettings set org.gnome.desktop.interface document-font-name 'Open Sans 10'` to change the font to opensans 5. open firefox and note the tabs and url bar show the wrong font Actual results: Font comfortaa is used. See attached screenshot from configured system in gnome-boxes Expected results: Open Sans should be used Additional info: This has been witnessed in passing on two separate machines, and tested fully on another.
Bug is being fixed upstream in https://bugzilla.mozilla.org/show_bug.cgi?id=1245811