The horizontal bar is appearing in the mobile devices.

[hilayt24]

While going through the site on the mobile I found that there is a horizontal bar appearing on the screen when the secondary menu is open.

Link: ​https://developer.wordpress.org/plugins/security/

solution

  @media (max-width: 876px){
    body.responsive-show {
      overflow-x:hidden;
    }
  }

[coffee2code]

Thanks for the report! While #7122 was technically a duplicate of this ticket since this one was reported earlier, that ticket ended up getting resolved first. As such, this ticket is being closed as a duplicate of that. The implemented solution to the issue was different that what was proposed here.