From 675e9b81c63494cdb62add81edbd86ac626714e5 Mon Sep 17 00:00:00 2001
From: Joffrey JAFFEUX <j.jaffeux@gmail.com>
Date: Tue, 26 May 2020 16:51:55 +0200
Subject: [PATCH] FIX: document.activeElement can be null on IE11 (#9880)

---
 app/assets/javascripts/discourse/app/controllers/composer.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/assets/javascripts/discourse/app/controllers/composer.js b/app/assets/javascripts/discourse/app/controllers/composer.js
index 4890db311eb..f76b948f8cb 100644
--- a/app/assets/javascripts/discourse/app/controllers/composer.js
+++ b/app/assets/javascripts/discourse/app/controllers/composer.js
@@ -1175,7 +1175,7 @@ export default Controller.extend({
     const elem = document.querySelector("html");
     elem.classList.remove("fullscreen-composer");
 
-    document.activeElement.blur();
+    document.activeElement && document.activeElement.blur();
     this.setProperties({ model: null, lastValidatedAt: null });
   },