Hopefully now mostly complete animations: we iterate through zero or more start states and then settle on the final place.

src/controllers/organisms/RoomView.js

@@ -671,7 +671,7 @@ module.exports = {
             }
 
             var node = this.eventNodes[ev.getId()];
-            if (node === undefined) continue;
+            if (!node) continue;
 
             var domNode = node.getDOMNode();
             var boundingRect = domNode.getBoundingClientRect();