Note: The issue is not specific to monobook - the markers will not be displayed on RC with Vector skin. However, Vector skin does not use markers on RC page to provide any additional clues, unlike in monobook.
In monobook skin markers have different colors to additionally convey information about a Watched page. Discarding colored markers with 'Group by page' may deprive users of that additional info.
- In betalabs change the skin to monobook and go to RC page with new filters enabled.
- On RC page results will be displayed with markers - e.g.
- Enable 'Grouped results by page' option. The grouped results will be displayed without markers - e.g.
Without filters enabled, 'Grouped by page' option displays the markers: