[Webkit-unassigned] [Bug 154447] New: select box not show popup in phantomjs

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=154447

            Bug ID: 154447
           Summary: select box not show popup in phantomjs
    Classification: Unclassified
           Product: WebKit
           Version: Other
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Forms
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: hxsdyjm at qq.com

When using phantomjs 2.1.1 to render form, select box never popup it's options when clicked, please see Issue: https://github.com/ariya/phantomjs/issues/14017

A maintainer said below:

> select boxes' pop-up menus are getting drawn in a different way from normal page contents and therefore are getting left out of the rendering (possibly they are never drawn at all in a 'headless' configuration)


I've double checked the click event surely sent to the select, and using keyboard ArrowDown key can switch to second options. So it's not the event sending problem.

Phantomjs userAgent is:

"Mozilla/5.0 (Unknown; Linux i686) AppleWebKit/538.1 (KHTML, like Gecko) PhantomJS/2.1.1 Safari/538.1"

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