The model/simulation from this page: http://www.cip.ifi.lmu.de/~schubert/kovar/ correctly shows several points in Firefox, Safari and Chrome, but not on QtTestBrowser. Tried both trunk (as of r86670) and qtwebkit-2.2 (8620c0c154d60999fd0d3573047d692b1dbcc4ce) with Qt-4.7 on Linux. Check bug 16614 for a reduction and test-cases, as this problem was originally reported there (but fixed a long time ago, not sure why it still affects QtWebKit).
This is a bug in Qt's X11 paint engine, the example works fine with trunk and branch using the raster engine.
(In reply to comment #1) > This is a bug in Qt's X11 paint engine, the example works fine with trunk and branch using the raster engine. Testing with qt-4.7.x it's still broken. It works fine only with the qt-4.8 branch.
=== 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.