Bug 15246 – Scroll bar removed during page load is not repainted properly

• Component: Layout and Rendering
• Status: RESOLVED DUPLICATE

[David Kilzer (:ddkilzer)]

* SUMMARY
When the page is loaded, a temporary vertical scroll bar is painted but later removed when it's not needed.  Unfortunately, the content behind the scroll bar is not fully repainted, leaving remnants of the scroll bar after the page has loaded.

* STEPS TO REPRODUCE
1. Launch Safari/WebKit.
2. Go to URL:  https://www.hdnl.co.uk/Index.aspx?PageId=3
3. Reload page until you see scroll bar remnants left on the right side of the page.

* EXPECTED RESULTS
No scroll bar remnants should be left on the page after it's done loading.

* ACTUAL RESULTS
Scroll bar remnants are left on the page after it loads.

* REGRESSION
Safari 2.0.4 (419.3) with original WebKit on Mac OS X 10.4.10 (8R218) CRASHES with a null pointer.

Repaint issue seen with a local debug build of WebKit r25671 with Safari 3 Public Beta v. 3.0.3 (522.12.1) on Mac OS X 10.4.10 (8R218).

Unfortunately, this appears to be a progression.  :)

* NOTES
Reproducing this issue may depend on the size of the browser window.

[David Kilzer (:ddkilzer)]

Created attachment 16337 [details]
Screenshot

(In reply to comment #0)
> * NOTES
> Reproducing this issue may depend on the size of the browser window.

This does require a particular browser window size to reproduce, but fortunately that's easy to set.  Once you load the page the first time, click the Green button to maximize the browser window to fit the content, then reload.  The result will be similar to the attached screenshot.

[Frances Cornwall]

This bug is a duplicate of: https://bugs.webkit.org/show_bug.cgi?id=10255.

[Karl Dubost]

*** This bug has been marked as a duplicate of bug 10255 ***