Output:
* 22:22:28  WARN <qof.engine> [qof_book_set_feature()] setting feature 'Use a dedicated opening balance account identified by an 'equity-type' slot'



modified   libgnucash/engine/qofbook.cpp
@@ -1252,6 +1252,7 @@ qof_book_set_feature (QofBook *book, const gchar *key, const gchar *descr)
     }
     if (feature == nullptr || g_strcmp0 (feature->get<const char*>(), descr))
     {
+        PWARN ("setting feature '%s'", key);
         qof_book_begin_edit (book);
         delete frame->set_path({GNC_FEATURES, key}, new KvpValue(g_strdup (descr)));
         qof_instance_set_dirty (QOF_INSTANCE (book));