diff --git a/core/ui/PageTemplate/sidebar.tid b/core/ui/PageTemplate/sidebar.tid
index 231866642..27424929f 100644
--- a/core/ui/PageTemplate/sidebar.tid
+++ b/core/ui/PageTemplate/sidebar.tid
@@ -1,8 +1,6 @@
 title: $:/core/ui/PageTemplate/sidebar
 tags: $:/tags/PageTemplate
 
-<div class="tw-sidebar-scrollable-backdrop"/>
-
 <$scrollable fallthrough="no" class="tw-sidebar-scrollable">
 
 <header class="sidebar-header">
diff --git a/core/ui/PageTemplate/story.tid b/core/ui/PageTemplate/story.tid
index f2a09e8f3..7545b7c0b 100644
--- a/core/ui/PageTemplate/story.tid
+++ b/core/ui/PageTemplate/story.tid
@@ -1,12 +1,8 @@
 title: $:/core/ui/PageTemplate/story
 tags: $:/tags/PageTemplate
 
-<$scrollable class="tw-story-scrollable">
-
 <section class="story-river">
 
 <$list filter="[list[$:/StoryList]]" history="$:/HistoryList" template="$:/core/ui/ViewTemplate" editTemplate="$:/core/ui/EditTemplate" storyview={{$:/view}} />
 
 </section>
-
-</$scrollable>
diff --git a/themes/tiddlywiki/vanilla/base.tid b/themes/tiddlywiki/vanilla/base.tid
index df9f18da7..097efe183 100644
--- a/themes/tiddlywiki/vanilla/base.tid
+++ b/themes/tiddlywiki/vanilla/base.tid
@@ -430,20 +430,11 @@ a.tw-tiddlylink-external:hover {
 
 @media (min-width: {{$:/themes/tiddlywiki/vanilla/metrics##storywidth}}) {
 
-	.tw-story-scrollable {
-		position: fixed;
-		top: 0;
-		left: 0;
-		right: 0;
-		bottom: 0;
-	}
-
 	.tw-message-box {
 		margin: 21px -21px 21px -21px;
 	}
 
 	.tw-sidebar-scrollable {
-		z-index: 1100;
 		position: fixed;
 		top: {{$:/themes/tiddlywiki/vanilla/metrics##storytop}};
 		left: {{$:/themes/tiddlywiki/vanilla/metrics##storyright}};
@@ -456,18 +447,6 @@ a.tw-tiddlylink-external:hover {
 		padding: 70px 0 28px 42px;
 	}
 
-	.tw-sidebar-scrollable-backdrop {
-		z-index: 1000;
-		position: fixed;
-		top: {{$:/themes/tiddlywiki/vanilla/metrics##storytop}};
-		left: {{$:/themes/tiddlywiki/vanilla/metrics##storyright}};
-		bottom: 0;
-		right: 0;
-		margin: 0 0 0 -42px;
-		background-color: <<colour page-background>>;
-		opacity: 0.8;	
-	}
-
 	.story-river {
 		position: relative;
 		left: {{$:/themes/tiddlywiki/vanilla/metrics##storyleft}};