diff --git a/node_modules/ace_tree/lib/ace_tree/virtual_renderer.js b/node_modules/ace_tree/lib/ace_tree/virtual_renderer.js
index 1ac072e7..6bf7dcc5 100644
--- a/node_modules/ace_tree/lib/ace_tree/virtual_renderer.js
+++ b/node_modules/ace_tree/lib/ace_tree/virtual_renderer.js
@@ -536,11 +536,11 @@ var VirtualRenderer = function(container, cellWidth, cellHeight) {
         var height = this.provider.getTotalHeight() + headingHeight;
         var maxHeight = this.getMaxHeight
             ? this.getMaxHeight()
-            : this.$maxLines * this.provider.rowHeight + headingHeight;
+            : this.$maxLines * this.provider.rowHeight + headingHeight
         var desiredHeight = Math.max(
             (this.$minLines || 1) * this.provider.rowHeight + headingHeight,
             Math.min(maxHeight, height)
-        );
+        ) + this.scrollMargin.v;
         var vScroll = height > maxHeight;
         
         if (desiredHeight != this.desiredHeight ||
diff --git a/plugins/c9.core/util.js b/plugins/c9.core/util.js
index 8d2a51dc..3ce82161 100644
--- a/plugins/c9.core/util.js
+++ b/plugins/c9.core/util.js
@@ -379,12 +379,12 @@ define(function(require, exports, module) {
             return cmd.replace(re, "\\$1");//.replace(/^~/, "\\~");
         };
         
-        var cloneObject = plugin.cloneObject = function(obj) {
+        var cloneObject = plugin.cloneObject = function(obj, shallow) {
             if (obj === null || typeof obj !== "object")
                 return obj;
             var copy = Array.isArray(obj) ? [] : {};
             Object.keys(obj).forEach(function(k) {
-                copy[k] = cloneObject(obj[k]);
+                copy[k] = shallow ? obj[k] : cloneObject(obj[k]);
             });
             return copy;
         };
diff --git a/plugins/c9.ide.ui/widgets.less b/plugins/c9.ide.ui/widgets.less
index 8fcfbef4..96a4313a 100644
--- a/plugins/c9.ide.ui/widgets.less
+++ b/plugins/c9.ide.ui/widgets.less
@@ -9,7 +9,7 @@
     background : transparent;
     color : @color;
     border-radius: 3px;
-    margin: 1px 0px 0px 0px;
+    margin: 0px 0px 0px 0px;
     padding-left: 6px;
     height: @tree-row-height;
 }