Caixa em branco de Pitivi

Question

Onde a caixa de configurações da camada (eu acho) deve estar em Pitivi 0.93 no Ubuntu 14.10, há apenas uma caixa branca.

Saída do terminal ao iniciar o Pitivi:

(pitivi:8218): Clutter-WARNING **: clutter_x11_set_use_argb_visual() can only be used before calling clutter_init()

(pitivi:8218): Clutter-WARNING **: clutter_x11_set_display() can only be used before calling clutter_init()

(pitivi:8218): Clutter-WARNING **: clutter_x11_disable_event_retrieval() can only be used before calling clutter_init()

(pitivi:8218): Clutter-WARNING **: clutter_disable_accessibility() can only be called before initializing Clutter.
Missing soft dependency:
- pycanberra not found on the system
    -> enables sound notifications when rendering is complete
Missing soft dependency:
- GnomeDesktop not found on the system
    -> file thumbnails provided by GNOME's thumbnailers

(pitivi:8218): Gdk-WARNING **: gdk_window_set_icon_list: icons too large
/usr/lib/x86_64-linux-gnu/pitivi/python/pitivi/project.py:559: TypeError: Passing arguments to gi.types.Boxed.__init__() is deprecated. All arguments passed will be ignored.
  Gst.Caps("application/ogg"),
/usr/lib/x86_64-linux-gnu/pitivi/python/pitivi/project.py:563: TypeError: Passing arguments to gi.types.Boxed.__init__() is deprecated. All arguments passed will be ignored.
  video_profile = GstPbutils.EncodingVideoProfile.new(Gst.Caps("video/x-theora"),
/usr/lib/x86_64-linux-gnu/pitivi/python/pitivi/project.py:565: TypeError: Passing arguments to gi.types.Boxed.__init__() is deprecated. All arguments passed will be ignored.
  Gst.Caps("video/x-raw"),
/usr/lib/x86_64-linux-gnu/pitivi/python/pitivi/project.py:569: TypeError: Passing arguments to gi.types.Boxed.__init__() is deprecated. All arguments passed will be ignored.
  audio_profile = GstPbutils.EncodingAudioProfile.new(Gst.Caps("audio/x-vorbis"),
/usr/lib/x86_64-linux-gnu/pitivi/python/pitivi/project.py:571: TypeError: Passing arguments to gi.types.Boxed.__init__() is deprecated. All arguments passed will be ignored.
  Gst.Caps("audio/x-raw"),
/usr/lib/x86_64-linux-gnu/pitivi/python/pitivi/project.py:792: TypeError: Passing arguments to gi.types.Boxed.__init__() is deprecated. All arguments passed will be ignored.
  self.container_profile.set_format(Gst.Caps(muxertype))
/usr/lib/x86_64-linux-gnu/pitivi/python/pitivi/project.py:771: TypeError: Passing arguments to gi.types.Boxed.__init__() is deprecated. All arguments passed will be ignored.
  self.video_profile.set_format(Gst.Caps(videotype))
/usr/lib/x86_64-linux-gnu/pitivi/python/pitivi/project.py:751: TypeError: Passing arguments to gi.types.Boxed.__init__() is deprecated. All arguments passed will be ignored.
  self.audio_profile.set_format(Gst.Caps(audiotype))
/usr/lib/python2.7/dist-packages/gi/overrides/GLib.py:548: Warning: Source ID 38 was not found when attempting to remove it
  super(MainLoop, self).run()

And when I import video and drag it to the layer area (when the white box appears):

(pitivi:8362): Gdk-WARNING **: gdk_window_set_icon_list: icons too large

(pitivi:8362): Clutter-WARNING **: Unable to query pixmap: 44019c2

(pitivi:8362): Clutter-WARNING **: Unable to query pixmap: 44019c4

(pitivi:8362): Clutter-WARNING **: Unable to query pixmap: 44019c6

(pitivi:8362): Clutter-WARNING **: Unable to query pixmap: 44019c8

(pitivi:8362): Clutter-WARNING **: Unable to query pixmap: 44019ca

(pitivi:8362): Clutter-WARNING **: Unable to query pixmap: 44019cc

(pitivi:8362): Clutter-WARNING **: Unable to query pixmap: 44019ce

(pitivi:8362): Clutter-WARNING **: Unable to query pixmap: 44019ff

(pitivi:8362): GStreamer-CRITICAL **: _gst_util_uint64_scale: assertion 'denom != 0' failed

(pitivi:8362): Clutter-WARNING **: Unable to query pixmap: 4401af2

(pitivi:8362): Clutter-WARNING **: Unable to query pixmap: 4401b19

(pitivi:8362): Clutter-WARNING **: Unable to query pixmap: 4401b40

(pitivi:8362): Clutter-WARNING **: Unable to query pixmap: 4401b67

(pitivi:8362): Clutter-WARNING **: Unable to query pixmap: 4401b8e

(pitivi:8362): Clutter-WARNING **: Unable to query pixmap: 4401bb5

Mais (pitivi:8362): Clutter-WARNING **: Unable to query pixmap: <blahblah> é despejado quando se tenta interagir com a caixa branca (pode ser drogado e forçado).

Alterar o tema do gnome e reiniciar o aplicativo não muda nada.

Existem duas áreas horizontais dentro da caixa branca que respondem aos eventos de clique direito e mostram um menu de contexto sobre como mover ou excluir uma camada.