(I work on Firefox Web Compatibility) If you have specific sites that aren't working, please let us know and we can investigate and try to fix them. The usual

(I work on Firefox Web Compatibility) If you have specific sites that aren't working, please let us know and we can investigate and try to fix them. The usual reporting channels are using https://webcompat.com https://webcompat.com or the "Report Broken Site" tool in the Firefox menu. Of course I"m also happy to take bug reports here if you (or anyone else) have them.