UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.98 Safari/537.36

Steps to reproduce the problem:
1. Create `select` element, with two `option`s
2. Attach `mouseup` event listener to select element
3. Check the select's value property on `mouseup`callback

What is the expected behavior?
When user clicks on select element the callback should be called with old value, once he/she click on another option, callback should be called with new one.a

What went wrong?
Once user clicks on option callback is not called.

Did this work before? N/A 

Does this work in other browsers? Yes

Chrome version: 54.0.2840.98  Channel: stable
OS Version: OS X 10.12.1
Flash Version: Shockwave Flash 23.0 r0

Live example at https://jsfiddle.net/tomalec/cog1fq12/5/ (open console to see the results)

As far as I tested it works correctly at:

Chrome 54, Windows
Firefox 49.0.2, Windows
Safari 10, Mac

So it seems like an inconsistency.

Spec says:
> before the relevant user interaction event is queued (e.g. before the click event), the user agent must set the selectedness of the picked option element to true
https://www.w3.org/TR/html5/forms.html#the-select-element
 

Deleted: mouseup-test.html 490 bytes

mouseup-test.html 490 bytes View Download