SyntheticEvent with undefined target

[fedosejev]

In v0.14.0-beta1 SyntheticEvent has target set to undefined:
http://jsbin.com/puvawigawi/edit?js,console,output

The same example works in v0.13.3:
http://jsbin.com/jajejewewa/edit?js,console,output

Any advise on what am I missing here?

[quantizor]

It was fixed in #4311 (comment) but you can use currentTarget.value in the meantime