This probably isn't a bug so I'll apologise in advance for wasting peoples time. Here's the thing when I get loads of server messages and such in my status bar I hit ctrl+l to bring up the line marker and nothing happens. I could have about 40 lines in my status bar and can't use the line marker.
When I type in a different window /.timer 1 1 echo -s Test I can then show and hide the line marker as I please but it wont appear until I do something like that.
Like I said it's probably not a bug, I've never really used or understood the line marker so I'll look forward to seeing any clarification.