When one display is attached to a corner, it gets stuck there

See video attached. I have seen it happen on other corners as well.

On Slack Felipe said the following: it seems like the correct intersects function is not working correctly

Launchpad Details: [#LP1611727](https://bugs.launchpad.net/bugs/1611727) Zisu Andrei - 2016-08-10 11:22:27 +0000

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