diff --git a/app/assets/javascripts/discourse/app/components/topic-progress.js b/app/assets/javascripts/discourse/app/components/topic-progress.js
index 56f17df089d..f00764fced5 100644
--- a/app/assets/javascripts/discourse/app/components/topic-progress.js
+++ b/app/assets/javascripts/discourse/app/components/topic-progress.js
@@ -185,6 +185,10 @@ export default Component.extend({
       "margin-bottom",
       !isDocked && composerHeight > draftComposerHeight ? "0px" : ""
     );
+    this.appEvents.trigger("topic-progress:docked-status-changed", {
+      docked: isDocked,
+      element: this.element,
+    });
   },
 
   click(e) {