https://github.com/minimaxir/hacker-news-undocumented
Normally most users can vouch for flagged submissions. The fact that this is non-vouchable is interesting.
Could it be that people who have commented in a flagged post are forbidden from vouching?
The link you posted says users can only vouch for dead submissions, though?
Could it be that people who have commented in a flagged post are forbidden from vouching?