Created attachment 8927383 [details] Google web-site after the update. User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3260.2 Safari/537.36 Steps to reproduce: I just try to update my firefox nightly and it happened. Actual results: After of the up-to-date download 58.0a1 (2017-11-10) (64-bit) all the fonts is being shown incorrectly. Seems like it broke after the update. Expected results: The web-sites should load the fonts correctly (isn't a OS issue, i make some tests in another browsers.