Pitivi blank box

Question

Where the layer settings (I think) box should be in Pitivi 0.93 in Ubuntu 14.10, there's only a white box.

Terminal output when starting 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

More (pitivi:8362): Clutter-WARNING **: Unable to query pixmap: <blahblah> is dumped when trying to interact with the white box (It can be drug down and strings back).

Changing gnome theme and restart the app changes nothing.

There are two horizontal areas within the white box that respond right click events and show a context menu about moving or deleting a layer.