[Bug 662071] [NEW] Firefox drawing problems after page up/page down with Kwin

[David Nemeskey]

Public bug reported:

Binary package hint: firefox

("Page" here refers to a "pageful" of content displayed in the viewport,
NOT an html page)

I am using Kubuntu 10.10, and when Kwin desktop effects are enabled,
Firefox fails to draw the page content correctly after a page down/page
up command: artifacts of the previous page remain on the screen. The
extent to which the old content remains varies; it can be a few pixels-
wide line, or the whole previous page. The behavior is irrespective of
whether the paging command is activated via the keyboard or clicking on
the scrollbar. The cursor keys, or dragging the scrollbar does not seem
to trigger the problem; however, maybe it is just that it is more
difficult to spot.

The problem does not appear if Kwin compositioning is switched off.
However, even with compositioning turned on, only Firefox 3.6 shows this
kind of behavior; other applications, including Firefox 4.0 beta are
unaffected.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: firefox 3.6.10+build1+nobinonly-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.35-22.34-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
Architecture: i386
Date: Sun Oct 17 11:55:55 2010
FirefoxPackages:
 firefox 3.6.10+build1+nobinonly-0ubuntu3
 firefox-gnome-support N/A
 firefox-branding 3.6.10+build1+nobinonly-0ubuntu3
 abroswer N/A
 abrowser-branding N/A
ProcEnviron:
 LANGUAGE=
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: firefox

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 maverick

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Firefox drawing problems after page up/page down with Kwin
https://bugs.launchpad.net/bugs/662071
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