PUBLIC MARKS from decembre with tags addon & update

For a few days now Whatsapp web has been asking me to update my Firefox to the latest version. I have a few instances of Waterfox running and this is the only system where this issue arises. Try this: add general.useragent.override.WEBSITE [general.useragent.override.whatsapp.com (or whaterver the address is)] in about:config and set it's value to Mozilla/5.0 (Windows NT 10.0; Win64; rv:60.0) Gecko/20100101 Firefox/60.0 or some other correct user agent. Addon you used might be bad, if above doesn't work you can try uMatrix (at least to test if it will work). If that wont work either, you can try and remove cookies and other local data for that websiteThanks will try that. I am using https://addons.mozilla.org/en-US/firefox/addon/uaswitcher/ which does the trick for other sites like Spotify.

An alternative or Update ? Rated 5 out of 5 stars by decembre on Feb. 21, 2018 · permalink When i write an Userstyle it is (was) the primary tool i use with Firebug. Now i search an alternative for this great tool: The devtool don't give us the possibility to search or test a specific CSS selector like Firepath do. And in an other hand the DevTool is less useful than Firebug (it don't give an easy way to identify in which userstyle a CSS rule is - with an human reading way)

If you are using Firefox Nightly right now, you may have noticed that the latest update of the web browser disabled all legacy add-ons. Firefox Nightly is the first version of the Firefox web browser that hit version 57, the version of Firefox that drops support for so-called legacy add-ons in favor of WebExtensions.