diff --git a/core/misc/ajax.js b/core/misc/ajax.js
index 061b594..6a8b16d 100644
--- a/core/misc/ajax.js
+++ b/core/misc/ajax.js
@@ -1027,7 +1027,7 @@
       // $(response.data) as new HTML rather than a CSS selector. Also, if
       // response.data contains top-level text nodes, they get lost with either
       // $(response.data) or $('<div></div>').replaceWith(response.data).
-      var $new_content_wrapped = $('<div></div>').html(response.data);
+      var $new_content_wrapped = $('<div></div>').html(response.data.trim());
       var $new_content = $new_content_wrapped.contents();
 
       // For legacy reasons, the effects processing code assumes that