Ticket #28823: 28823.2.diff

src/wp-admin/css/common.css

@@ -2533 +2533 @@
         transition: color .1s ease-in-out, background .1s ease-in-out;
 }
 
+#TB_closeWindowButton:focus .tb-close-icon,
 body.plugin-install-php .tb-close-icon:focus,
 body.plugin-install-php .tb-close-icon:hover,
 body.import-php .tb-close-icon:focus,

src/wp-admin/js/plugin-install.js

@@ -42 +42 @@
                 tb_click.call(this);
 
                 $('#TB_title').css({'background-color':'#222','color':'#cfcfcf'});
-                $('#TB_ajaxWindowTitle').html('<strong>' + plugininstallL10n.plugin_information + '</strong>&nbsp;' + $(this).data( 'title' ) );
+                $('#TB_ajaxWindowTitle').html( '<strong>' + plugininstallL10n.plugin_information + '</strong>&nbsp;' + $(this).data( 'title' ) );
+                $('#TB_iframeContent').attr( 'title', plugininstallL10n.plugin_information + ' ' + $(this).data( 'title' ) );
+                $('#TB_closeWindowButton').focus();
+
                 return false;
         });