Ticket #38511: 38511.11.patch

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

@@ -93 +93 @@
 
                 // Replace any new markers nodes with views.
                 editor.on( 'setcontent', function( event ) {
-                        if ( event.load && ! event.initial ) {
-                                // Make sure that the editor is focussed.
-                                // May refresh the content internally which resets the iframes.
-                                editor.focus();
+                        if ( event.load && ! event.initial && editor.quirks.refreshContentEditable ) {
+                                // Make sure there is a selection in Gecko browsers.
+                                // Or it will refresh the content internally which resets the iframes.
+                                editor.quirks.refreshContentEditable();
                         }
 
                         wp.mce.views.render();