Gtk error when I try to open and isntall a new font

When I did doble-click on top of a font the font viewer is not open.

When I run from the console the command `gnome-font-viewer in-mono.otf` it shows this error:
⇒ gnome-font-viewer in-mono.otf

(gnome-font-viewer:3639): GLib-GObject-WARNING **: invalid (NULL) pointer instance

(gnome-font-viewer:3639): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

(gnome-font-viewer:3639): Gtk-CRITICAL **: gtk_widget_get_scale_factor: assertion 'GTK_IS_WIDGET (widget)' failed
[1] 3639 segmentation fault (core dumped) gnome-font-viewer in-mono.otf

If I try with sudo throws this other error:
⇒ sudo gnome-font-viewer in-mono.otf
No protocol specified
Unable to init server: Could not connect: Connection refused

(gnome-font-viewer:3609): Gtk-WARNING **: cannot open display: :0

I tried with different kind of fonts (ttf, otf ...)

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: gnome-font-viewer 3.24.0-0ubuntu1
ProcVersionSignature: Ubuntu 4.11.0-10.15-generic 4.11.8
Uname: Linux 4.11.0-10-generic x86_64
ApportVersion: 2.20.6-0ubuntu4
Architecture: amd64
CurrentDesktop: GNOME
Date: Tue Jul 25 23:19:53 2017
InstallationDate: Installed on 2017-07-25 (0 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170723)
SourcePackage: gnome-font-viewer
UpgradeStatus: No upgrade log present (probably fresh install)