diff --git a/src/packages/tree-view/stylesheets/tree-view.less b/src/packages/tree-view/stylesheets/tree-view.less
index fcc209fca..6b45aca68 100644
--- a/src/packages/tree-view/stylesheets/tree-view.less
+++ b/src/packages/tree-view/stylesheets/tree-view.less
@@ -13,7 +13,7 @@
   .tree-view-resize-handle {
     position: absolute;
     top: 0;
-    right: 0;
+    right: -5px;
     bottom: 0;
     width: 10px;
     cursor: col-resize;
diff --git a/static/editor.less b/static/editor.less
index 0d48ba7e1..69bdc6855 100644
--- a/static/editor.less
+++ b/static/editor.less
@@ -98,7 +98,7 @@
   bottom: 0;
   width: 15px;
   overflow-y: auto;
-  z-index: 1;
+  z-index: 3;
 }
 
 .editor .scroll-view {