[vtkusers] Strange rendering problem - renderwindow becomes black

[vinmean]

This rendering issue occurs randomly. The render window partially hides all
the actors.  I have attached a video link to the email. It shows the object
that I rendered using vtk. In the video I try to interact with the window. I
have also captured how the object should have looked like in the same video
towards the end. Please let me know what kind of bug this is and how to fix
it. 

<iframe width="560" height="315"
src="https://www.youtube.com/embed/jdtVxofwnaI" frameborder="0"
allow="autoplay; encrypted-media" allowfullscreen></iframe>





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