User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:56.0) Gecko/20100101 Firefox/56.0 Build ID: 20170926190823 Steps to reproduce: I had to restart my mac IOS 10.10.5 and ever since the fonts have not displayed properly on firefox. Some pages load fonts correctly but have either these AAA or rectangles instead of any fonts. I have been through my font folder and resolved any conflicts. I cannot find a resolution on the forum that I can understand or seems to be the same as my issue. Please have a look at the screen shot and you'll see my problem. Thanks for your help.

I did find that some fonts were working on some sites but I was still having problems. I saw a post suggesting to fix this that it may be a "Bangla" font....didn't know I had any of those. The suggestion was to type about.config in the browser. I have looked at that page but made no changes of done anything there. Since doing that I have less fonts showing on most websites.