gpy98671 until the team changes it's opinion on this, which doesn't look likely, there would need to be an extension to get your desired functionality back. However AFAIK webextensions do not have this capability right now. You can join the conversation here to follow the progress and/or help/get help: https://bugzilla.mozilla.org/show_bug.cgi?id=1215061
(In reply to gpy98671 from comment #148)
gpy98671 until the team changes it's opinion on this, which doesn't look likely, there would need to be an extension to get your desired functionality back. However AFAIK webextensions do not have this capability right now. You can join the conversation here to follow the progress and/or help/get help: https:/ /bugzilla. mozilla. org/show_ bug.cgi? id=1215061