News for hackers. Stuff that matters.
Re:Firefox 54: E10S-Multi, WebExtension APIs, CSS Clip-Path by nachtigall on Wednesday June 14, 2017 @01:48AM (#14550864)
You might want to install the Add-on Compatibility Reporter available from https://addons.mozilla.org/en-US/firefox/addon/add-on-compat...
Re:Firefox 54: E10S-Multi, WebExtension APIs, CSS Clip-Path by perlwle on Thursday June 15, 2017 @02:04AM (#14558232)
thanks for recommending this.

It lists dozens of incompatible installed add-ons such as cookie monster, Live Http Header, UserAgent Switcher, Vimporator etc.