diff --git a/ui (gen4)/features/exif.js b/ui (gen4)/features/exif.js
index 9afb193f..cd620daf 100755
--- a/ui (gen4)/features/exif.js	
+++ b/ui (gen4)/features/exif.js	
@@ -225,12 +225,9 @@ var MetadataUIActions = actions.Actions({
 
 	// XXX should we replace 'mode' with nested set of metadata???
 	// XXX make this support multiple images...
-	// XXX BUG: with mode 'disabled' key D enables elements but does not
-	// 		hide them...
 	showMetadata: ['Image/Show metadata',
 		function(image, mode){
 			image = this.data.getImage(image)
-			//mode = mode || 'short'
 			mode = mode || 'disabled'
 
 			var field_order = this.config['metadata-field-order'] || []
@@ -276,7 +273,10 @@ var MetadataUIActions = actions.Actions({
 			var o = overlay.Overlay(this.ribbons.viewer, 
 				browse.makeList(
 						null,
-						fields)
+						fields,
+						{
+							showDisabled: false,
+						})
 					// path selected...
 					.open(function(evt, path){ 
 						// edit field...
@@ -288,6 +288,7 @@ var MetadataUIActions = actions.Actions({
 						*/
 					}))
 					.close(function(){
+						// XXX
 					})
 			o.client.dom.addClass('metadata-view')
 
diff --git a/ui (gen4)/features/history.js b/ui (gen4)/features/history.js
index bc0c6b6d..030ccc52 100755
--- a/ui (gen4)/features/history.js	
+++ b/ui (gen4)/features/history.js	
@@ -348,8 +348,7 @@ var URLHistoryUIActions = actions.Actions({
 		// 	- [ 'open', 'close' ]	- explicitly select event
 		'url-history-list-clear': ['open', 'close'],
 	},
-	// XXX BUG: when running from action menu this breaks...
-	// 			...possibly connected with restoring after .preventClosing(..)
+	// XXX make availabilyty checking live (now on open dialog)...
 	// XXX need to check items...
 	// XXX use svg icons for buttons...
 	listURLHistory: ['History|File/Show history',
@@ -375,7 +374,15 @@ var URLHistoryUIActions = actions.Actions({
 			var o = overlay.Overlay(this.ribbons.viewer, 
 				browse.makeList(
 						null, 
-						Object.keys(this.url_history).reverse(),
+						Object.keys(this.url_history)
+							.reverse()
+							// NOTE: this might get a little slow for 
+							// 		very large sets...
+							.map(function(p){
+								return !that.checkURLFromHistory(p) ? 
+									'- ' + p 
+									: p 
+							}),
 						{
 							// add item buttons...
 							itemButtons: [
@@ -433,9 +440,11 @@ var URLHistoryUIActions = actions.Actions({
 
 			var list = o.client
 
+			/*
 			Object.keys(this.url_history).reverse().forEach(function(p){
 				that.checkURLFromHistory(p) || list.filter(p).addClass('disabled')
 			})
+			*/
 
 			// select and highlight current path...
 			cur && list
diff --git a/ui (gen4)/lib/widget/browse.js b/ui (gen4)/lib/widget/browse.js
index b491ee9e..504e88e7 100755
--- a/ui (gen4)/lib/widget/browse.js	
+++ b/ui (gen4)/lib/widget/browse.js	
@@ -2107,7 +2107,11 @@ ListPrototype.options = {
 
 						if(typeof(k) == typeof('str')){
 							n = tt
+
 						} else {
+							// NOTE: here we want to avoid .data contamination
+							// 		so we'll make a copy...
+							n = n.slice()
 							n[0] = tt
 						}