Bug 35038 – [Qt] Text selection is slow with some huge wikipedia pages

• Component: New Bugs
• Status: RESOLVED INVALID

[Davide Bettio]

While page text is beeing selected the CPU usage increases up to 100%.

[Tor Arne Vestbø]

Please follow the QtWebKit bug reporting guidelines when reporting bugs.

See http://trac.webkit.org/wiki/QtWebKitBugs

Specifically:

  - The 'QtWebKit' component should only be used for bugs/features in the
    public QtWebKit API layer, not to signify that the bug is specific to
    the Qt port of WebKit

      http://trac.webkit.org/wiki/QtWebKitBugs#Component

  - Add the keyword 'Qt' to signal that it's a Qt-related bug

      http://trac.webkit.org/wiki/QtWebKitBugs#Keywords

[Kent Hansen]

Reproduced with Qt 4.6.3 against r55658.
Wow, that's pretty bad.

[Andri Möll]

Stumbled upon the same issue.  From the info that the Web Inspector timeline gives, "Painting" takes ages, from tens of seconds to a minute.

[Andri Möll]

I managed to track this down and work around it by removing a particular "position: absolute" CSS line on a nested div in my code, though there's apparently a weird bug lurking somewhere that happens (or so I hear) only on the Qt port of WebKit.  Incl. Qt 4.7 tech preview.

[Jocelyn Turcotte]

=== Bulk closing of Qt bugs ===

If you believe that this bug report is still relevant for a non-Qt port of webkit.org, please re-open it and remove [Qt] from the summary.

If you believe that this is still an important QtWebKit bug, please fill a new report at https://bugreports.qt-project.org and add a link to this issue. See http://qt-project.org/wiki/ReportingBugsInQt for additional guidelines.