Blaze: Uncaught Error: Must be attached

See [example project](https://github.com/mitar/meteor-issue2981). When clicking on "Click Me" button, there is an uncaught Error: `Must be attached`.

```
Uncaught Error: Must be attached domrange.js:337
DOMRange.containsElement domrange.js:337
(anonymous function) view.js:741
(anonymous function) events.js:47
jQuery.event.dispatch jquery.js:4624
elemData.handle jquery.js:4292
```
