diff --git a/js/src/forum/components/PostStream.js b/js/src/forum/components/PostStream.js
index 31c9ae892..9aa519b7e 100644
--- a/js/src/forum/components/PostStream.js
+++ b/js/src/forum/components/PostStream.js
@@ -339,6 +339,7 @@ export default class PostStream extends Component {
       this.state.unpause();
       m.redraw();
       this.calculatePosition();
+      this.updateScrubber();
     });
   }