I rolled the plug in back on both of my sites because the error was causing organization issues.
The tabs plug in I use “Word Press Tabs” uses a short code in posts and pages. On both posts and pages, the tabs lost labels and the first tab in each set simply disappeared. It was a very weird error.
With my count down plug in — the short code was displayed and the roll back on your plug in didn’t fix it so I uninstalled it.