[Webkit-unassigned] [Bug 73291] New: Background image (1px width, repeated horizontally) is cut after div resizing and/or ajax query

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=73291

           Summary: Background image (1px width, repeated horizontally) is
                    cut after div resizing and/or ajax query
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P3
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: dawidoss at gmail.com


Created an attachment (id=116912)
 --> (https://bugs.webkit.org/attachment.cgi?id=116912&action=review)
Screenshot of issue

What steps will reproduce the problem?
0. Body element should have 1px width background image repeated horizontally.
1. Prepare div element (lets call it inner), embedded in another semi-transparent div element (outer).
2. Inner element smoothly shrinks in height, reloads its content via ajax and then smoothly expands again.
3. After that some part of background on the right is not rendered.
4. Seems the bug applies only if after reloading inner div content, page does _not_ fill entire window.

What is the expected result?
Background image filling entire width of rendered page.

What happens instead?
Some part (half or entire right margin) of background on the right is not rendered.

Additional info:
UserAgentString: Mozilla/5.0 (X11; Linux i686) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.120 Safari/535.2
Screen resolution: 1920x1080,
OS: Gentoo Linux,
Window manager: XFce4.8 (xfwm4-4.8.2) with compositing on (problem remains with compositing off),
GTK engine: Problem remains with Nodoka-Midnight and few different gtk engines tested,
Video driver: Catalyst drivers,
Video card: ATI Mobility Radeon 5400 series,
Xorg server: xorg-server-1.10.4-r1,
GTK+: gtk+-2.24.5-r1 and gtk+-3.0.12-r1 (not sure which currently applies to XFce or Chromium, but most likely version 2).

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