diff --git a/ui (gen4)/lib/widget/browse2.html b/ui (gen4)/lib/widget/browse2.html
index 7efdaa85..0c296380 100755
--- a/ui (gen4)/lib/widget/browse2.html	
+++ b/ui (gen4)/lib/widget/browse2.html	
@@ -184,10 +184,8 @@ requirejs([
 				// XXX this does not appear to survive attaching an item 
 				//		to the document...
 				open: function(e){ 
-					// XXX this does not work, likely because we are 
-					//		losing this event object at some point...
 					e.preventDefault()
-					console.log('!!!!!!!!!!!!') },
+					console.log('test: open: default prevented...') },
 				//cls: ['heading'],
 			})
 	}, {
diff --git a/ui (gen4)/lib/widget/browse2.js b/ui (gen4)/lib/widget/browse2.js
index c891283b..37e5bb39 100755
--- a/ui (gen4)/lib/widget/browse2.js	
+++ b/ui (gen4)/lib/widget/browse2.js	
@@ -409,7 +409,7 @@ function(event, handler, action, default_item, filter, options){
 				// 		item chain to create it's own new event object...
 				// 		this will isolate each chain from the others in 
 				// 		state and handling propagation...
-				callItemEventHandlers(item, event, null, ...args) }) },
+				callItemEventHandlers(item, event, evt, ...args) }) },
 		...(action ? [action] : []),
 		false) 
 	return Object.assign(
@@ -2630,8 +2630,6 @@ var BaseBrowserPrototype = {
 	open: makeItemEventMethod('open', 
 		function(evt, item){},
 		// XXX not yet sure if this is correct...
-		// XXX BUG: evt.preventDefault() does not affect this for some reason...
-		// 		...i.e. evt here and in the user cycle are not the same...
 		function(evt, item){
 			item.length > 0
 				&& this.toggleCollapse(item) },