diff --git a/app/assets/javascripts/discourse/components/composer-editor.js.es6 b/app/assets/javascripts/discourse/components/composer-editor.js.es6
index 170cf2fd11a..efe81cdb9e0 100644
--- a/app/assets/javascripts/discourse/components/composer-editor.js.es6
+++ b/app/assets/javascripts/discourse/components/composer-editor.js.es6
@@ -136,7 +136,7 @@ export default Ember.Component.extend({
       this.appEvents.on(event, this, this._resetShouldBuildScrollMap);
     });
 
-    Ember.run.schedule("afterRender", () => {
+    Ember.run.scheduleOnce("afterRender", () => {
       $input.on('touchstart mouseenter', () => {
         if (!$preview.is(":visible")) return;
         $preview.off('scroll');