[Bug 1005677] Re: Re-emergence of "Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion `GTK_IS_WIDGET (widget)'" Makes vlc and other Qt apps crashing crashing

[Xavier Guillot]

Yes, since yesterday updates, Thunderbird does not start anymore :

$ thunderbird
ACR (Component): component init
(thunderbird:5541): Gtk-CRITICAL **: _ubuntu_gtk_overlay_scrollbar_new: assertion `os_scrollbar_new' failed
(thunderbird:5541): Gtk-CRITICAL **: IA__gtk_container_add: assertion `GTK_IS_WIDGET (widget)' failed
(thunderbird:5541): Gtk-CRITICAL **: IA__gtk_widget_realize: assertion `GTK_IS_WIDGET (widget)' failed
(thunderbird:5541): GLib-GObject-CRITICAL **: g_object_set_data: assertion `G_IS_OBJECT (object)' failed

(crashreporter:5561): Gtk-CRITICAL **: _ubuntu_gtk_overlay_scrollbar_new: assertion `os_scrollbar_new' failed
(crashreporter:5561): Gtk-CRITICAL **: IA__gtk_widget_set_composite_name: assertion `GTK_IS_WIDGET (widget)' failed
(crashreporter:5561): Gtk-CRITICAL **: IA__gtk_widget_set_parent: assertion `GTK_IS_WIDGET (widget)' failed
(crashreporter:5561): GLib-GObject-CRITICAL **: g_object_ref: assertion `G_IS_OBJECT (object)' failed
(crashreporter:5561): Gtk-CRITICAL **: IA__gtk_widget_show: assertion `GTK_IS_WIDGET (widget)' failed
(crashreporter:5561): Gtk-CRITICAL **: IA__gtk_range_get_adjustment: assertion `GTK_IS_RANGE (range)' failed
(crashreporter:5561): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(crashreporter:5561): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
(crashreporter:5561): Gtk-CRITICAL **: gtk_scrolled_window_adjustment_changed: assertion `adjustment != NULL' failed
(crashreporter:5561): Gtk-CRITICAL **: _ubuntu_gtk_overlay_scrollbar_new: assertion `os_scrollbar_new' failed
(crashreporter:5561): Gtk-CRITICAL **: IA__gtk_widget_set_composite_name: assertion `GTK_IS_WIDGET (widget)' failed
(crashreporter:5561): Gtk-CRITICAL **: IA__gtk_widget_set_parent: assertion `GTK_IS_WIDGET (widget)' failed
(crashreporter:5561): GLib-GObject-CRITICAL **: g_object_ref: assertion `G_IS_OBJECT (object)' failed
(crashreporter:5561): Gtk-CRITICAL **: IA__gtk_widget_show: assertion `GTK_IS_WIDGET (widget)' failed
(crashreporter:5561): Gtk-CRITICAL **: IA__gtk_range_get_adjustment: assertion `GTK_IS_RANGE (range)' failed
(crashreporter:5561): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(crashreporter:5561): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
(crashreporter:5561): Gtk-CRITICAL **: gtk_scrolled_window_adjustment_changed: assertion `adjustment != NULL' failed
(crashreporter:5561): Gtk-CRITICAL **: IA__gtk_range_get_adjustment: assertion `GTK_IS_RANGE (range)' failed
(crashreporter:5561): Gtk-CRITICAL **: IA__gtk_widget_size_request: assertion `GTK_IS_WIDGET (widget)' failed
(crashreporter:5561): GLib-GObject-CRITICAL **: g_object_get_qdata: assertion `G_IS_OBJECT (object)' failed

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https://bugs.launchpad.net/bugs/1005677

Title:
  Re-emergence of "Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion
  `GTK_IS_WIDGET   (widget)'" Makes vlc and other Qt apps crashing
  crashing

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