--- a/tests/test-topic-stack.t	Tue Jul 25 14:56:52 2017 +0200
+++ b/tests/test-topic-stack.t	Sun Jul 23 13:30:28 2017 +0900
@@ -187,6 +187,29 @@
       }
   ]
 
+check that topics and stack are available even if ui.strict=true
+
+  $ hg topics
+   * foo
+  $ hg stack
+  ### topic: foo
+  ### branch: default
+  t4@ c_f (current)
+  t3: c_e
+  t2: c_d
+  t1: c_c
+  t0^ c_b (base)
+  $ hg topics --config ui.strict=true
+   * foo
+  $ hg stack --config ui.strict=true
+  ### topic: foo
+  ### branch: default
+  t4@ c_f (current)
+  t3: c_e
+  t2: c_d
+  t1: c_c
+  t0^ c_b (base)
+
 error case, nothing to list
 
   $ hg topic --clear