The Vatican City flag is recognizable to many Catholics for its yellow and white design, but its coat of arms is less well-known. However, those familiar with it are likely accustomed to an incorrect version that has been published widely on online platforms including Wikipedia. The erroneous file includes a red disk at the bottom of the papal tiara, while the correct official version is white. Father William Becker, a keen flag enthusiast and pastor at St. Columbanus Parish in Blooming Prairie, Minnesota, has devoted a website to detailing the correct design and hopes that the Vatican will step in to clarify the matter.
https://www.catholicnewsagency.com/news/254032/wikipedia-had-the-wrong-vatican-city-flag-for-years-now-incorrect-flags-are-everywhere