I have a real data anomaly for you! The Google Search Console data anomalies page has updated the rich cards section to change the date on where they posted the change to the job rich cards back in September now to tomorrow, November 9, 2017.
Here is a screen shot showing the future date, for something that was changed and updated on September 13, 2017:
But as you can see, we reported months ago the same thing.
So either Google posted a date update on purpose or there is something weird going on.
Just a heads up to all webmasters using rich cards for job listings.
Forum discussion at Google+.