Default binding mode not obeyed of custom attributes on input tags

[JeroenVinke]

I have a bindable inside a custom attribute with two-way binding as default. When I put this attribute on an input tag and use bind, the default binding mode is ignored and one-way databinding is used.

plunker: http://plnkr.co/edit/aKqPmKlrRHXEu39BzJRV?p=preview

[jwahyoung]

@jdanyow This may need to be tagged as a bug.

[Thanood]

This seems to apply to <select> elements, too.
http://plnkr.co/edit/pQBcziEVQsf5wHJl1Qti?p=preview

[Vaccano]

Not sure if it adds info for this bug, but I hit it while doing the "options" style binding too.

http://stackoverflow.com/questions/35658280/two-way-binding-in-an-aurelia-custom-attribute

Seems obvious in retrospect, but a workaround to this issue is to update your HTML to use .two-way instead of just .bind. (Thanks to @JeroenVinke for pointing this out to me.)