[Webkit-unassigned] [Bug 136342] New: Inconsistent width for select with/without multiple attribute in Chrome

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=136342

           Summary: Inconsistent width for select with/without multiple
                    attribute in Chrome
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
               URL: http://jsfiddle.net/ces2L3Ln/3/
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: markus-bugswebkit at stellenticket.de


I'm not totally sure what the correct behaviour should be (and whether I am right here, since this happens only in Chrome but not in Safari), but here is my observation with Chrome 39.0.2138.3 on OSX 10.10 DP6:

When having this html:

<div id="container">
    <div class="select_container">
        <select multiple>
            <option>Very long option Very long option Very long option Very long option Very long option</option>
        </select>
    </div>
    <div class="select_container">
        <select multiple>
            <option>Not so long</option>
        </select>
    </div>
</div>

with this style:

#container {
    width: 200px;
    display: table;
}
.select_container {
    width: 50%;
    display: table-cell;
}
select {
    width: 100%;
}

I'd expect the `.select_container` and `select` to be 100px wide (50% of the 200px of their parent). But the space they take is dependent on the text in the `option` tag.

When you remove the `multiple`, the `select` and `.select_container` have a width of 100px like expected. See http://jsfiddle.net/ces2L3Ln/3/

In Firefox (33.0a2) the width is always 100px, not dependent on `multiple`.

Safari Version 8.0 (10600.1.8) (Yosemite DP6) renders the width like Firefox (100px), too.

Other browser/versions untested.

I'd expect it to behave like Firefox/Safari do it (`multiple` should not change the width calculation of the `select` tag). Or are they doing it wrong? Is there any hint in the spec?

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