Here is an example where RCV could have prevented what seems to be a case of intentionally misleading voters:
Florida investigating third-party candidate who ran for state Senate | TheHill
There is also a long article in the Washington Post but you might need a subscription to read it.
Quick summary: The Republican candidate was running against the Dem candidate Jose Rodriguez. Late in the game, Alex Rodriguez filed to run as an independent. The Rep won with 48% of the vote and a margin of just 34 votes. Alex Rodriguez, the independent, took more than 6,000 votes. Based on no history in politics, no backing, and a change in affiliation from Rep to Ind in order to run, it appears that Alex Rodriguez ran simply to confuse voters and take votes from the Dem candidate with the same name... and it worked.
Since only a plurality is required, the Rep will take office but was this really the will of the people? If a majority was required than a runoff would be held at some considerable expense. If RCV was used, the Ind candidate would be dropped and his votes distributed according to the individual voters' designated second choice.
If this was just a successful dirty trick then RCV could have cured it. As it stands, it appears that what appears to be a clever attempt at misleading voters was rewarded.