I just flagged this answer as not an answer:
But the Flag "it is not an answer" option is still available:
I was expecting something like this:
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It actually doesn't - I flag NAA's quite often and have bumped into this recently - You get the Red Box of Doom ©:
I do remember that before, the option would be disabled with 'you have already flagged this post' or something like that. That would be better - can we have it back?