I've just downvoted an anwser with a comment explaining my downvote, the poster edited his answer, but I can't revert my vote because "vote is too old to be changed unless post is edited"
I think what happened is that he edited his post during the 5mn initial "furtive editing" period, so the answer doesn't appear as edited, which causes the system to deny me the right of changing my vote.
If that helps, the answer I tried to un-downvote is here
changing-votes
?vote-too-old-to-be-changed
? Any opinions?vote-too-old
is now used in a few questions, so I'll use that too.