Shell – How to get the latest GNOME shell in Fedora

1. System settings > System > System info (or Details on some distros). On all distros, in terminal:

   gnome-control-center info
   

2. As far as I understand from Gnome's IRC channel, it is an upstream decision.

So, apparently my second edit wasn't correct: the way it GNOME Shell determines application grouping isn't the one I described.

After asking on the IRC gnome-shell channel, user halfline provided me the policy for grouping applications into Dash icons:

_GTK_APPLICATION_ID property of the window matched to the desktop file id or WM_CLASS matched to the desktop file id or _NET_WM_PID matched to the desktop file started or StartupWMClass in the desktop file matched to WM_CLASS on the window

He also suggested that it may be possible to change firefox WM_CLASS, and he's right, as there is a --class flag for firefox that allows to change it.

Here's an example:

$ firefox &
$ xprop WM_CLASS
WM_CLASS(STRING) = "Navigator", "Firefox"

Using that flag I get

$ firefox --class "Trello" &
$ xprop WM_CLASS
WM_CLASS(STRING) = "Navigator", "Trello"

which it just have to match the desktop file ID. Now icons are correctly grouped.

Also, note that epiphany has the support to create desktop apps, handling correctly the links with the default browser, therefore for my original purpose it is even better than firefox.