diff --git a/app/assets/javascripts/discourse/app/lib/transform-post.js b/app/assets/javascripts/discourse/app/lib/transform-post.js
index 113a7a766a..44dbe1d5cd 100644
--- a/app/assets/javascripts/discourse/app/lib/transform-post.js
+++ b/app/assets/javascripts/discourse/app/lib/transform-post.js
@@ -172,6 +172,7 @@ export default function transformPost(
   }
 
   const showTopicMap =
+    _additionalAttributes.indexOf("topicMap") !== -1 ||
     showPMMap ||
     (post.post_number === 1 &&
       topic.archetype === "regular" &&