Cancelling an edit action on a job leads to a broken page when nothing has been edited

To replicate:

Go into the Configuration area of your plan and select a job.
The plan details page will come up.
Press on "Cancel" without doing anything else.

--> you get moved to a screen that, according to Brydie, "Shouldn't exist". You also can't do any of the actions on the right side on this screen.

The Cancel action works normally if you've edited a field - it then simply removes your edit and resets the Job details.