Disabled md-options still ripple and close md-select on click

[keatonboyle]

I'd expect <md-option>s that have been disabled (with a disabled or ng-disabled attribute) not to ripple or close the select dropdown on click. However, sometimes disabled options still animate on click, still show a pointer cursor on hover, and still close on click.

It seems that some browsers result in animation/close and some do not. Though even in browsers that do not animate, the background of disabled options changes.

See: http://codepen.io/anon/pen/bVwOWG

[jelbourn]

Using that CodePen, I was able to see the issue on my laptop (Chrome Linux) but not my desktop (also Chrome Linux, oddly enough).