[Webkit-unassigned] [Bug 13037] New: REGRESSION: Copy-on-scroll not reset properly after back/forward navigation

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=13037

           Summary: REGRESSION: Copy-on-scroll not reset properly after
                    back/forward navigation
           Product: WebKit
           Version: 522+ (nightly)
          Platform: Macintosh
        OS/Version: Mac OS X 10.4
            Status: NEW
          Keywords: Regression, NeedsRadar
          Severity: Normal
          Priority: P1
         Component: Page Loading
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mitz at webkit.org


Summary:
After navigating back and forth through the b/f cache, the web view is set to
"copy on scroll" despite having content that should prohibit such behavior
(e.g. fixed background).

To reproduce:
1) Go to <http://www.w3.org/TR/CSS21/>.
2) Click on the "next" link.
3) Go back.
4) Go forward.
5) Scroll up and down.

Expected result:
The "W3 Working Draft" banner on the left to remain fixed and not scroll out of
view.

Actual result:
The "W3 Working Draft" banner scrolls out of view when scrolling down, and
artifacts appear when scrolling up.

Regression:
Yes, this doesn't happen in shipping Safari.

Notes:
While this is a rendering bug, it's ultimately caused by the page loading
machinery not (re)setting up the view properly, so I'm filing under Page
Loading.


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