1195675 - Firefox v40 regression in mouse event handling and <select /> <option />'s

Status: RESOLVED DUPLICATE of bug 1194733

(Firefox :: Untriaged, defect)

Description

[kenny]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.155 Safari/537.36

Steps to reproduce:

In Firefox v40 a document with a mouseup event handler that calls e.preventDefault() prevents selecting a select option element.

This can be simply reproduced (from a much more complex page):-

<select>
    <option value="1">One</option>
    <option value="2">Two</option>
</select>

...

document.addEventListener('mouseup', function(e) {
    console.log('mouseup fired!');
    e.preventDefault();
});

jsfiddle: https://jsfiddle.net/7Lm6zvvk/2/


Actual results:

In Firefox v40 - The option is not selected and the select list does not close.
In Firefox v39 - The option is selected as expected.


Expected results:

The option is selected, the selected item is changed and the select list closes.

Comment 1

[Alice0775 White]

Bug 1194733 will fix this.