id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc,focuses 38565,Twenty Seventeen: Header overlay causes horizontal scroll in Firefox,Clorith,,"As reported by @ahortin in [https://wordpress.org/support/topic/horizontal-scrolling-when-live-previewing-twenty-seventeen-in-customizer/ Alpha/Beta] In Firefox the overlay and the title get a full width of the viewport each, this means you get a slightly darkened background image, and can then scroll to the right, off screen, to view the title of your site. The supplied screenshot is scrolled halfway to the right to show both sides of the screen for representation.",defect (bug),new,normal,4.7,Bundled Theme,4.7,normal,,needs-patch,,