fast/block/positioning/056.html fails on Qt 4.8 and Qt 5.0 too.
There are separated rectangles instead of a big one.
Created attachment 155483 [details]
compare to Mac's result
click on review patch to see the diff
=== 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.