Many criticals when removing the plugin from the panel
GLib-GObject-CRITICAL **: 10:30:58.717: g_signal_emit_valist: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
GLib-GObject-CRITICAL **: 10:30:58.717: g_object_set_qdata: assertion 'G_IS_OBJECT (object)' failed
GLib-GObject-CRITICAL **: 10:30:58.717: instance with invalid (NULL) class pointer
GLib-GObject-CRITICAL **: 10:30:58.719: g_signal_handlers_destroy: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
GLib-GObject-CRITICAL **: 10:30:58.719: instance with invalid (NULL) class pointer
GLib-GObject-CRITICAL **: 10:30:58.719: g_signal_handlers_destroy: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
GLib-GObject-CRITICAL **: 10:30:58.719: g_object_unref: assertion 'old_ref > 0' failed
GLib-GObject-CRITICAL **: 10:30:58.720: instance with invalid (NULL) class pointer
GLib-GObject-CRITICAL **: 10:30:58.721: g_signal_emit_valist: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
GLib-GObject-CRITICAL **: 10:30:58.724: g_object_set_qdata: assertion 'G_IS_OBJECT (object)' failed
GLib-GObject-CRITICAL **: 10:30:58.724: instance with invalid (NULL) class pointer
GLib-GObject-CRITICAL **: 10:30:58.724: g_signal_handlers_destroy: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
GLib-GObject-CRITICAL **: 10:30:58.724: instance with invalid (NULL) class pointer
GLib-GObject-CRITICAL **: 10:30:58.724: g_signal_handlers_destroy: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
GLib-GObject-CRITICAL **: 10:30:58.725: g_object_unref: assertion 'old_ref > 0' failed
GLib-GObject-CRITICAL **: 10:30:58.730: instance with invalid (NULL) class pointer
GLib-GObject-CRITICAL **: 10:30:58.730: g_signal_emit_valist: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
GLib-GObject-CRITICAL **: 10:30:58.730: g_object_set_qdata: assertion 'G_IS_OBJECT (object)' failed
GLib-GObject-CRITICAL **: 10:30:58.730: instance with invalid (NULL) class pointer
GLib-GObject-CRITICAL **: 10:30:58.730: g_signal_handlers_destroy: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
GLib-GObject-CRITICAL **: 10:30:58.730: instance with invalid (NULL) class pointer
GLib-GObject-CRITICAL **: 10:30:58.730: g_signal_handlers_destroy: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
GLib-GObject-CRITICAL **: 10:30:58.730: g_object_unref: assertion 'old_ref > 0' failed
GLib-GObject-CRITICAL **: 10:30:58.730: g_object_unref: assertion 'G_IS_OBJECT (object)' failed