Clear selection interaction mode with "Esc"
**This issue was created automatically from an original [Mantis Issue](http://paraview.org/Bug/view.php?id=15528). Further discussion may take place here.**
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Steps:
+ Start ParaView
+ Click "Select Cells On" to ensure selection mode in the Render View
+ Hit "Esc" key. This should have caused the application to come out of selection mode. It doesn.t
issue