--- a/mercurial/HGChangesetViewer.st	Tue Jan 24 14:57:01 2017 +0100
+++ b/mercurial/HGChangesetViewer.st	Thu Feb 02 16:05:13 2017 +0100
@@ -601,7 +601,8 @@
 
 !HGChangesetViewer methodsFor:'hooks'!
 
-postOpenWith: anUIBuilder
+postOpenWith: aUIBuilder
+    super postOpenWith: aUIBuilder.
     self changesetHolder value isNil ifTrue:[ 
         self changesetHolder value: HGChangeset anyInstance
     ].