'r' indication 'may be damaging' edit is displayed black in the Legend where there are no RC records indicated as damaging present in the viewport.
'r' turned red if according to the settings for RC changes, the 'may be damaging' edits appear on the RC page.
- In production, on ORES enabled wiki (enwiki, for example), go to Preferences - Recent changes and change in 'Display options' , 'Days to show in recent changes' to 1 and 'Number of edits to show in recent changes, page histories, and in logs, by default' also to 1 (so to increase the likelihood that ORES scored as damaging edits won't get into your restricted selection).
- click on 'Recent changes' - most likely you'll see a record that is not scored as 'may be damaging' by ORES - and 'r' in the Legend, will be black e.g.
- Now, select 50, 100 etc changes and select 3, 7, or 30 days - if ORES scored records will be returned, the 'r' will turn red.
However, if the same steps are repeated for RC filters, there will be a state - in #3 the 'r' will not turn red, instead, all 'r' - in the Legend and beside records will be displayed as black.
Reload the page - all 'r' will turned red: