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I recently updated to WordPress 4.5 and I noticed that any new page I create, along with my homepage no longer allows me to turn off the page header for that page. It started happening after the latest WordPress update. I down graded back to the previous version and I’m still having those issues. On my homepage, it has the title and when I change it to not display the header, when I save, I notice the dropdown is back to blank and it defaults to showing the header. I’ve tried disabling plugins to no effect.