diff --git a/ui (gen4)/features/meta.js b/ui (gen4)/features/meta.js
index 0d794735..1cda4977 100755
--- a/ui (gen4)/features/meta.js	
+++ b/ui (gen4)/features/meta.js	
@@ -66,7 +66,7 @@ core.ImageGridFeatures.Feature('viewer-testing', [
 	'ui-partial-ribbons-2',
 		'-ui-partial-ribbons',
 	//*/
-	// XXX EXPERIMENTAL: virtual-dom based ribbons...
+	/*/ XXX EXPERIMENTAL: virtual-dom based ribbons...
 	'ui-partial-ribbons-vdom',
 		//'-ui-image-marks',
 		//'-ui-image-bookmarks',
diff --git a/ui (gen4)/features/ui-partial-ribbons-vdom.js b/ui (gen4)/features/ui-partial-ribbons-vdom.js
index bca03ce7..ef7c36e4 100755
--- a/ui (gen4)/features/ui-partial-ribbons-vdom.js	
+++ b/ui (gen4)/features/ui-partial-ribbons-vdom.js	
@@ -622,6 +622,7 @@ module.PartialRibbons = core.ImageGridFeatures.Feature({
 		[[
 			'toggleMark',
 			'toggleBookmark',
+		//], function(){ this.updateRibbon() }],
 		], function(){ this.virtualdom.sync() }],
 	],
 })