Ticket #30785: 30785.patch

src/wp-includes/js/tinymce/plugins/wpeditimage/plugin.js

@@ -185 +185 @@
                 windowWidth = window.innerWidth;
                 toolbarWidth = toolbarNode.offsetWidth;
                 toolbarHalf = toolbarWidth / 2;
-                iframe = editor.getContentAreaContainer().firstChild;
+                iframe = editor.getContentAreaContainer().getElementsByTagName( 'iframe' )[0];
                 iframePos = DOM.getPos( iframe );
                 iframeWidth = iframe.offsetWidth;
                 iframeHeigth = iframe.offsetHeight;