diff -r 6bc2f1b3bc9d -r 7c18798fc24d mercurial/templates/monoblue/changeset.tmpl
--- a/mercurial/templates/monoblue/changeset.tmpl	Tue Mar 20 21:10:29 2018 -0400
+++ b/mercurial/templates/monoblue/changeset.tmpl	Tue Mar 20 14:19:28 2018 +0800
@@ -49,6 +49,7 @@
         <dt>changeset {rev}</dt>
         <dd><a href="{url|urlescape}rev/{node|short}{sessionvars%urlparameter}">{node|short}</a></dd>
         {if(obsolete, succsandmarkers%obsfateentry)}
+        {if(instabilities, whyunstable%whyunstableentry)}
         {ifeq(count(parent), '2', parent%changesetparentdiff, parent%changesetparent)}
         {child%changesetchild}
     </dl>