diff --git a/static/text-editor-shadow.less b/static/text-editor-shadow.less
index cb63b45b0..80dc4967b 100644
--- a/static/text-editor-shadow.less
+++ b/static/text-editor-shadow.less
@@ -17,6 +17,7 @@
 
 .gutter {
   overflow: hidden;
+  z-index: 0;
   text-align: right;
   cursor: default;
   min-width: 1em;