I was told there to make a comment under a wrong answer and downvote it and upvote correct answer(s), for dealing with incorrect answers. I present here a case of an answer that was incomplete, leaving a question unanswered. It was accepted and utterly upvoted (16 votes), while a better answer was posted and responded to the full question but had only 9 votes. So I commented under the accepted answer, claiming that it left an unanswered question and that a better answer existed below it.
A day or so later, the same user made a wrong answer and was again utterly upvoted. After a long discussion in the comment section (and a hot chat discussion), the author of the wrong answer realized he was wrong and accordingly corrected his (now absolutely great) answer. However, from this chat disussion, I learned that this user modified the previous question I linked above, changing the question he had left unanswered so now his incomplete answer is complete, and the whole comments I had left below his incomplete answer aren't applying anymore. This is disgusting. How was such an edit even approved? For instance, there's an edit to a answer I suggested an edit to an answer without changing its meaning but it was rejected. Also, during the hot chat discussion I mentioned above, I noticed that one of my answer was downvoted, no reason given. I don't have enough points to know who did that, but if that person was in the chat as I suspect, this is disgusting because I see this as a downvote of vengance/hate directed toward me for ranting (I agree I ranted in the chat. I even wanted to quit PSE due to the above problems I faced). But downvotes shouldn't be given for hating a person, only to make the questions and answers better.