Ticket #44479: 44479.2.patch

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

@@ -3755 +3755 @@
         /* With panel images 100% of the screen height, we're going to fix the background image where supported to create a parallax-like effect. */
         .background-fixed .panel-image {
                 background-attachment: fixed;
+                backface-visibility: hidden;
         }
 
         .page-two-column .panel-content .entry-header {