Ubiquity 2.21.1
/usr/lib/ubiquity/ubiquity/frontend/gtk_ui.py:278: Warning: The property GtkButton:use-stock is deprecated and shouldn't be used anymore. It will be removed in a future version.
  self.builder.add_from_file('%s/ubiquity.ui' % UIDIR)
/usr/lib/ubiquity/ubiquity/frontend/gtk_ui.py:278: Warning: The property GtkSettings:gtk-button-images is deprecated and shouldn't be used anymore. It will be removed in a future version.
  self.builder.add_from_file('%s/ubiquity.ui' % UIDIR)
/usr/lib/ubiquity/ubiquity/frontend/gtk_ui.py:278: Warning: The property GtkImage:stock is deprecated and shouldn't be used anymore. It will be removed in a future version.
  self.builder.add_from_file('%s/ubiquity.ui' % UIDIR)

(ubiquity:2436): Gtk-CRITICAL **: gtk_radio_button_set_group: assertion '!g_slist_find (group, radio_button)' failed

(ubiquity:2436): Gtk-CRITICAL **: gtk_radio_button_set_group: assertion '!g_slist_find (group, radio_button)' failed

(ubiquity:2436): IBUS-WARNING **: The owner of /home/ubuntu/.config/ibus/bus is not root!
/usr/lib/ubiquity/ubiquity/frontend/gtk_ui.py:908: Warning: The property GtkSettings:gtk-cursor-blink is deprecated and shouldn't be used anymore. It will be removed in a future version.
  self.install_details_sw.add(self.vte)
/usr/lib/ubiquity/ubiquity/frontend/gtk_ui.py:908: Warning: The property GtkSettings:gtk-cursor-blink-time is deprecated and shouldn't be used anymore. It will be removed in a future version.
  self.install_details_sw.add(self.vte)
/usr/lib/ubiquity/ubiquity/frontend/gtk_ui.py:908: Warning: The property GtkSettings:gtk-cursor-blink-timeout is deprecated and shouldn't be used anymore. It will be removed in a future version.
  self.install_details_sw.add(self.vte)
update_release_notes_label()
update_release_notes_label()

(ubiquity:2436): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:2436): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:2436): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:2436): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:2436): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:2436): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:2436): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:2436): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:2436): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed
/usr/lib/ubiquity/plugins/ubi-console-setup.py:72: Warning: Source ID 9935 was not found when attempting to remove it
  GLib.source_remove(self.keyboard_layout_timeout_id)
/usr/lib/ubiquity/plugins/ubi-console-setup.py:74: Warning: Source ID 9938 was not found when attempting to remove it
  GLib.source_remove(self.keyboard_variant_timeout_id)
/usr/lib/ubiquity/plugins/ubi-usersetup.py:394: Warning: Source ID 10149 was not found when attempting to remove it
  GLib.source_remove(self.hostname_timeout_id)