--- trac/ticket/templates/report_view.html.orig 2021-05-09 23:08:49 UTC
+++ trac/ticket/templates/report_view.html
@@ -162,6 +162,7 @@ history and logs, available at https://trac.edgewall.o
# for value_for_group, row_group in row_groups:
# if loop.first:
+ # set header_group, header = None, None
# set column_headers
# for header_group in header_groups: