I flagged a question for moderator attention. After exchanging some more comments with the OP, I wanted to add something to my remarks to the moderators, so I chose "flag" and "in need of moderator intervention" again and wrote some more remarks. Only when I tried to submit them did I get the red error message saying that I'd already flagged for moderator attention and can't do it again.
- This failure should have occurred earlier, before I took the time to write the remarks.
- I think it shouldn't occur at all, since it may well be useful to add further remarks later.