Comment 6 for bug 1754833

I can confirm it's a bug in budgie. I installed the latest ISO in a VM, and am seeing that after first login, not having launched any application except for terminal:

ubuntu@budgievm:~$ xdg-settings get default-web-browser
firefox.desktop
ubuntu@budgievm:~$ apt policy firefox
firefox:
  Installé : (aucun)
  Candidat : 57.0.1+build2-0ubuntu1
 Table de version :
     57.0.1+build2-0ubuntu1 500
        500 http://es.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
ubuntu@budgievm:~$ apt policy chromium-browser
chromium-browser:
  Installé : 65.0.3325.146-0ubuntu1
  Candidat : 65.0.3325.146-0ubuntu1
 Table de version :
 *** 65.0.3325.146-0ubuntu1 500
        500 http://es.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
        100 /var/lib/dpkg/status