diff --git a/framework/core/js/bower.json b/framework/core/js/bower.json
index 68cb96cc3..9c3b50c07 100644
--- a/framework/core/js/bower.json
+++ b/framework/core/js/bower.json
@@ -1,4 +1,5 @@
 {
+  "name": "flarum",
   "dependencies": {
     "jquery": "2.1.3",
     "jquery.hotkeys": "jeresig/jquery.hotkeys#0.2.0",
@@ -6,7 +7,7 @@
     "spin.js": "~2.0.1",
     "moment": "~2.8.4",
     "color-thief": "v2.0",
-    "mithril": "0.2.0",
+    "mithril": "lhorie/mithril.js#next",
     "loader.js": "~3.2.1"
   }
 }
diff --git a/framework/core/js/forum/src/components/composer.js b/framework/core/js/forum/src/components/composer.js
index a9f4b0101..1e8a01ea7 100644
--- a/framework/core/js/forum/src/components/composer.js
+++ b/framework/core/js/forum/src/components/composer.js
@@ -228,7 +228,8 @@ class Composer extends Component {
     if ([Composer.PositionEnum.MINIMIZED, Composer.PositionEnum.HIDDEN].indexOf(this.position()) !== -1) {
       this.position(Composer.PositionEnum.NORMAL);
     }
-    this.render();
+    // work around https://github.com/lhorie/mithril.js/issues/603
+    setTimeout(() => this.render());
   }
 
   hide() {