Make HTMLClass::history signature compatible to _HTMLItem::history _HTMLItem::history accepts 4 optional named parameters. If a template (e.g. issue.item.html) calls history with a named param and then is called in the context of creating a new issue, you get a traceback. Change HTMLClass::history to accept any named parameter so adding new named params to _HTMLItem::history doesn't require a change to HTMLClass::history.

--- a/roundup/cgi/templating.py	Thu Jun 03 21:48:28 2021 -0400
+++ b/roundup/cgi/templating.py	Fri Jun 04 07:28:18 2021 -0400
@@ -958,7 +958,7 @@
             '\n' + \
             self.input(type="hidden", name="@action", value=action)
 
-    def history(self):
+    def history(self, **args):
         if not self.is_view_ok():
             return self._('[hidden]')
         return self._('New node - no history')