Ticket #40522: 40522.patch

src/wp-content/themes/twentyseventeen/style.css

@@ -1739 +1739 @@
 @supports ( object-fit: cover ) {
         .has-header-image .custom-header-media img,
         .has-header-video .custom-header-media video,
-        .has-header-video .custom-header-media iframe,
         .has-header-image:not(.twentyseventeen-front-page):not(.home) .custom-header-media img {
                 height: 100%;
                 left: 0;