[Webkit-unassigned] [Bug 106077] New: [Qt]=?UTF-8?Q?=20When=20frame=20flattening=EF=BC=8Cdrag=20scrollbar?=, then click link to goto next frame, the page scroll offset is preserved

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=106077

           Summary: [Qt] When frame flattening，drag scrollbar, then click
                    link to goto next frame, the page scroll offset is
                    preserved
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Frames
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: chenzx at cn.fujitsu.com


Created an attachment (id=181280)
 --> (https://bugs.webkit.org/attachment.cgi?id=181280&action=review)
Simple test case for this bug

Use QtWebKit's demos/browser to test:
Enable frame flattening，
Then drag scrollbar,
then click link in frame to change its src to jump to new frame
(The whole frameset/URL is not changed)
However,
the page's scroll offset is prerved
It should be reset

If disable frame flattening，
The behavor is right:
(1) When click to navigate to new frame, the page scroll offset is reset to 0
(2) Use History's go back, the prevous frame's page scroll offset is still preserved.

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