[Webkit-unassigned] [Bug 142502] New: <button> overflow is hidden by default which doesn't match other block boxes

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=142502

            Bug ID: 142502
           Summary: <button> overflow is hidden by default which doesn't
                    match other block boxes
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: gwhit at microsoft.com

I filed this same bug against Blink, here is the information I shared with them

Example URL:
http://jsbin.com/lobuvacezo/1/edit?html,css,output

Steps to reproduce the problem:
1. Open the url and view the rendered test results

What is the expected behavior?
All three of them should have the same overflow behavior (they should overflow).

What went wrong?
Blink/Webkit seems to have a bug where buttons get a default overflow of hidden or if a descendant gets any position other than static.

Did this work before? N/A 

Does this work in other browsers? Yes 

Chrome version: 41.0.2272.76 m  Channel: stable
OS Version: 10.0
Flash Version: Shockwave Flash 16.0 r0

I raised this to the CSS WG (https://lists.w3.org/Archives/Public/www-style/2015Mar/0099.html) and it was agreed that this was a Blink/Webkit bug.

Other Browsers Tested:
   Chrome 41: Fail
   IE 11: Fail
   IE Edge (Windows 10 TP): Pass
   Firefox: Pass
   Presto: Pass
   Safari 7: Fail
   Safari 8: Fail

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