Comment 1 for bug 1447911

Bisected. The problem originated in:

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revno: 2453 [merge]
author: Kevin DuBois <email address hidden>
committer: Tarmac
branch nick: development-branch
timestamp: Thu 2015-04-02 10:12:31 +0000
message:
  compositor: write an acceptance test that tests that the render code is overridable and gets called when a surface is introduced. This required the publication of SceneElement, which must be accessed to draw the scene.

  Approved by Robert Carr, PS Jenkins bot, Alan Griffiths, Andreas Pokorny.
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