Lint has introduced a newer rule, which is too restrictive, for now...

.rubocop.yml

@@ -7,3 +7,7 @@ BlockLength:
     - config/routes.rb
 Rails/HttpPositionalArguments:
   Enabled: false
+# https://github.com/bbatsov/rubocop/issues/4189
+# TODO remove once rubocopy has changed beyond 0.48.1
+Lint/AmbiguousBlockAssociation:
+  Enabled: false