As soon as I install
ubuntu-restricted-extras 18.04 or 18.10, Emoji stops working in browsers and in the shell. In the apps, they look a lot like Gedit, but they are not displayed at all or black and white in notifications and browsers (Chrome, Firefox, Epiphany).
Could it be because
ttf-mscorefonts-install do anything in the fontconfig? How could I check and go back? (Is this a bug?)
I can not find anything about it online, which could be a problem with my locale (German), but it certainly happens on many machines and Ubuntu derivatives such as operating systems.