It appears the daylight savings time switch bug that existed in old versions is back. I'm seeing it right this very second in version 8.5.5. As soon as the clocks went back an hour tonight, all my frequently recurring jobs stopped because their next scheduled time was 2am but it suddenly was 1am again. I know they'll start working again once 2am comes again but it does basically take the Visualcron service down for an hour.
I'm surprised that even resetting or editing or manually running a job isn't enough to reset it's Next Run date.