Symptoms

I have a button on a view that when pressed will validate the entries, show a message asking if they are sure they want to submit (Confirmation), then start the workflow. If someone clicks cancel or the X(to close) on the confirmation window, nothing happens. Would like the window to close and go back to the form. Clicking OK continues as desired.
 

Diagnoses

The confirmation message action was followed by a "close the browser" action in the rules pane. When the "close the browser" action was removed, the cancel button on the confirmation message works correctly.
 

Resolution

Labs confirmed this was a bug and it will be fixed in a release sometime in the future.