If you have 1 or more jobs in the queue and have displaying the “job details” panel. Then delete ALL jobs in the queue, then the “Tasks” panel is updated (ie: is blank), but the “Job Details” panel still holds onto and displays the info from the last selected job, before it was deleted. Doesn’t feel right…It’s almost as if we need a “refresh” button…only joking! 
Thanks for reporting this! It looks like the same thing happens if you simply clear the selection in the job list. It’s now logged as a bug.
Cheers,
- Ryan