diff --git a/services/web/app/views/project/editor/review-panel.jade b/services/web/app/views/project/editor/review-panel.jade
index 633c6ccdcb..5da0fe5eaf 100644
--- a/services/web/app/views/project/editor/review-panel.jade
+++ b/services/web/app/views/project/editor/review-panel.jade
@@ -256,10 +256,10 @@ script(type='text/ng-template', id='addCommentEntryTemplate')
 
 script(type='text/ng-template', id='resolvedCommentsDropdownTemplate')
 	.resolved-comments
-		//- .resolved-comments-backdrop(
-		//- 	ng-class="{ 'resolved-comments-backdrop-visible' : state.isOpen }"
-		//- 	ng-click="state.isOpen = !state.isOpen"
-		//- )
+		.resolved-comments-backdrop(
+			ng-class="{ 'resolved-comments-backdrop-visible' : state.isOpen }"
+			ng-click="state.isOpen = false"
+		)
 		a.resolved-comments-toggle(
 			href
 			ng-click="toggleOpenState();"
diff --git a/services/web/public/coffee/ide/review-panel/controllers/ReviewPanelController.coffee b/services/web/public/coffee/ide/review-panel/controllers/ReviewPanelController.coffee
index fb521ed9f8..cbdfd62ef3 100644
--- a/services/web/public/coffee/ide/review-panel/controllers/ReviewPanelController.coffee
+++ b/services/web/public/coffee/ide/review-panel/controllers/ReviewPanelController.coffee
@@ -251,8 +251,7 @@ define [
 			$timeout () ->
 				$scope.$broadcast "review-panel:layout"
 
-		$scope.submitReply = (entry, entry_id) ->
-			$scope.unresolveComment(entry, entry_id)
+		$scope.submitReply = (entry, entry_id) ->			
 			thread_id = entry.thread_id
 			content   = entry.replyContent
 			$http.post("/project/#{$scope.project_id}/thread/#{thread_id}/messages", {content, _csrf: window.csrfToken})
diff --git a/services/web/public/stylesheets/app/editor/review-panel.less b/services/web/public/stylesheets/app/editor/review-panel.less
index aa14e2c2d4..1092fc2eb2 100644
--- a/services/web/public/stylesheets/app/editor/review-panel.less
+++ b/services/web/public/stylesheets/app/editor/review-panel.less
@@ -93,6 +93,7 @@
 	border-left: solid 1px @rp-border-grey;
 	font-size: @rp-base-font-size;
 	color: @rp-type-blue;
+	z-index: 4; // 3 is Ace's gutter z-index value.
 }
 
 .review-panel-toolbar {
@@ -112,7 +113,7 @@
 	border-bottom: 1px solid @rp-border-grey;
 	background-color: @rp-bg-dim-blue;
 	text-align: center;
-	z-index: 2;
+	z-index: 3;
 	flex-basis: 32px;
 	flex-shrink: 0;
 }
@@ -687,19 +688,18 @@
 	}
 }
 
-// .resolved-comments-backdrop {
-// 	display: none;
-// 	position: fixed;
-// 	top: 0;
-// 	right: 0;
-// 	bottom: 0;
-// 	left: 0;
-// 	background-color: rgba(0, 0, 0, .5);
+.resolved-comments-backdrop {
+	display: none;
+	position: fixed;
+	top: 0;
+	right: 0;
+	bottom: 0;
+	left: 0;
 
-// 	&-visible {
-// 		display: block;
-// 	}
-// }
+	&-visible {
+		display: block;
+	}
+}
 
 .resolved-comments-dropdown {
 	display: none;