Binding behaviour throws error when leaving active shell with validations

[suamikim]

I'm submitting a bug report

• Library Version: 0.7.0
• aurelia-framework version: 1.0.1

Please tell us about your environment:

• Operating System: Windows 10
• Node Version: 4.2.3
• NPM Version: 3.10.5
• JSPM OR Webpack AND Version JSPM 0.16.19 but not used
• Browser: Chrome 51
• Language: ESNext

Current behavior: I've implemented some validations based on the latest blog post and the appendant gist.

The validations are added to a login view which lives inside its own shell. When leaving this shell to the main app shell, the file validate-binding-behavior.js throws an error Cannot read property 'target' of undefined in line 55.

Do I somehow have to unregister the validations manually or is this a bug?

Here's a runable gist which throws the error when submiting the form: https://gist.run/?id=80e8325e62a7502e5a54e5c148e8c011

[jdanyow]

try running this.controller.reset() before switching the app root.

updated validation gist with new bits: https://gist.run/?id=3625244afe4f188785190b23f2e7f472