GNOME Software only shows Editor's Picks

[Evan]

Ubuntu 16.04.4
gnome-software 3.20.5

Whenever I launch GNOME Software I only see the Featured Application and Editor's Picks. No categories are visible.

[Evan (ev)]

$ gnome-software --verbose
(gnome-software:2341): Gs-DEBUG: compatible-project: GNOME
(gnome-software:2341): Gs-DEBUG: compatible-project: KDE
(gnome-software:2341): Gs-DEBUG: compatible-project: XFCE
(gnome-software:2341): As-DEBUG: run GsPlugin::setup
(gnome-software:2341): Gs-DEBUG: searching for plugins in /usr/lib/gs-plugins-9
(gnome-software:2341): Gs-DEBUG: opened plugin /usr/lib/gs-plugins-9/libgs_plugin_appstream.so: appstream
(gnome-software:2341): Gs-DEBUG: opened plugin /usr/lib/gs-plugins-9/libgs_plugin_dpkg.so: dpkg
(gnome-software:2341): Gs-DEBUG: opened plugin /usr/lib/gs-plugins-9/libgs_plugin_ubuntu-reviews.so: ubuntu-reviews
(gnome-software:2341): Gs-DEBUG: opened plugin /usr/lib/gs-plugins-9/libgs_plugin_hardcoded-featured.so: hardcoded-featured
(gnome-software:2341): Gs-DEBUG: opened plugin /usr/lib/gs-plugins-9/libgs_plugin_epiphany.so: epiphany
(gnome-software:2341): Gs-DEBUG: opened plugin /usr/lib/gs-plugins-9/libgs_plugin_menu-spec-categories.so: menu-spec-categories
(gnome-software:2341): Gs-DEBUG: opened plugin /usr/lib/gs-plugins-9/libgs_plugin_provenance.so: provenance
(gnome-software:2341): Gs-DEBUG: opened plugin /usr/lib/gs-plugins-9/libgs_plugin_snap.so: snap
(gnome-software:2341): Gs-DEBUG: opened plugin /usr/lib/gs-plugins-9/libgs_plugin_dummy.so: dummy
(gnome-software:2341): Gs-DEBUG: opened plugin /usr/lib/gs-plugins-9/libgs_plugin_menu-spec-refine.so: menu-spec-refine
(gnome-software:2341): Gs-DEBUG: opened plugin /usr/lib/gs-plugins-9/libgs_plugin_apt.so: apt
(gnome-software:2341): Gs-DEBUG: opened plugin /usr/lib/gs-plugins-9/libgs_plugin_icons.so: icons
(gnome-software:2341): Gs-DEBUG: opened plugin /usr/lib/gs-plugins-9/libgs_plugin_hardcoded-blacklist.so: hardcoded-blacklist
(gnome-software:2341): Gs-DEBUG: opened plugin /usr/lib/gs-plugins-9/libgs_plugin_fwupd.so: fwupd
(gnome-software:2341): Gs-DEBUG: opened plugin /usr/lib/gs-plugins-9/libgs_plugin_moduleset.so: moduleset
(gnome-software:2341): Gs-DEBUG: appstream [0.0] to be ordered after menu-spec-categories [0.0] so promoting to [1.0]
(gnome-software:2341): Gs-DEBUG: ubuntu-reviews [0.0] to be ordered after appstream [1.0] so promoting to [2.0]
(gnome-software:2341): Gs-DEBUG: epiphany [0.0] to be ordered after appstream [1.0] so promoting to [2.0]
(gnome-software:2341): Gs-DEBUG: provenance [0.0] to be ordered after apt [0.0] so promoting to [1.0]
(gnome-software:2341): Gs-DEBUG: cannot find plugin 'packagekit-refine'
(gnome-software:2341): Gs-DEBUG: snap [0.0] to be ordered after appstream [1.0] so promoting to [2.0]
(gnome-software:2341): Gs-DEBUG: cannot find plugin 'packagekit-refine'
(gnome-software:2341): Gs-DEBUG: menu-spec-refine [0.0] to be ordered after appstream [1.0] so promoting to [2.0]
(gnome-software:2341): Gs-DEBUG: cannot find plugin 'packagekit-refine'
(gnome-software:2341): Gs-DEBUG: apt [0.0] to be ordered after appstream [1.0] so promoting to [2.0]
(gnome-software:2341): Gs-DEBUG: provenance [1.0] to be ordered after apt [2.0] so promoting to [3.0]
(gnome-software:2341): Gs-DEBUG: cannot find plugin 'packagekit-refine'
(gnome-software:2341): Gs-DEBUG: icons [0.0] to be ordered after appstream [1.0] so promoting to [2.0]
...