[kdenlive] Title clip obscuring *some* video tracks

[Jon Danniken]

Hello all, I am using kdenlive 0.9.10 under KDE 4.14.3.  I have a
project with multiple video tracks, and I inserted a title clip into the
top video track (Video 1), and then stretched the title clip duration to
emcompass the entire minute of the video.

Everything works fine while the segment in Video 2 is playing, I can see
both the title text and the video, but then when the segment from Video
3 starts, the video goes dark (the text from the title clip is still
visible).

After the segment from Video 3 ends, I have another segment in Video 2,
and it plays just fine, with the title text and the video visible.

It seems that any of the other video segments (Video 3 through Video 5)
are all dark except for clips inserted into Video 2.

Any idea what is causing this, and might there be a possible workaround?

Thanks,

Jon