Ticket #55793: 55793.diff

src/wp-admin/css/dashboard.css

@@ -155 +155 @@
 
 .welcome-panel-header-image {
         position: absolute;
-        inset: -1rem var(--about-header-bg-offset-inline) 0 auto;
+        top: -1rem;
+        right: var(--about-header-bg-offset-inline);
+        bottom: 0;
         width: var(--about-header-bg-width);
         height: auto;
 }