Ticket #20855: 20855.10.diff

wp-admin/js/common.js

@@ -397 +397 @@
                 button = form.find('input[type="submit"]');
                 input = form.find('input[type="file"]');
                 function toggleUploadButton() {
-                        button.prop('disabled', '' === input.val());
+                        button.prop('disabled', '' === input.filter(':visible').val());
                 }
                 toggleUploadButton();
                 input.on('change', toggleUploadButton);

wp-admin/media-upload.php

@@ -87 +87 @@
 
         require_once('./admin-header.php');
 
-        $form_class = 'media-upload-form type-form validate';
+        $form_class = 'media-upload-form wp-upload-form type-form validate';
 
         if ( get_user_setting('uploader') )
                 $form_class .= ' html-uploader';