Board Thread:Support Requests - Getting Technical/@comment-24173435-20181230030803/@comment-27345308-20181230034115

The white line can be turned off via "no split" option in ThemeDesigner if your wiki background is wide enough for it to appear (it can also be turned off by unhiding that option if it isn't wide enough, or hiding the white line via CSS). The blue line has been there since December 12. Could it be this edit of yours that caused it to look like that?