Cancelled experiment page is wrong when no associated jobs was cancelled
The cancelled experiment page does not show any useful information, when the cancellation of this experiment does not involve the cancellation of a specific job. In this case, we get the configuration page for this experiment instead of a page indicated that the experiment has been cancelled.
I do not know the exact cause of the problem. I suspect that the lack of error message such as 'Job x was cancelled by an external user agent' leads to the problem.