In Amarok 2 (trunk) we are using a QToolBox widget for the "Playlists" sidebar tab. It gets rendered correctly with Plastique, but with Oxygen it looks very broken. I'm attaching a screenshot of the problem.
Created attachment 31866 [details] Screenshot illustrating rendering issue
Oxygen calls setBackgroundRole(QPalette::NoRole), which causes this bug for some reason...
It would be also nice to find out, why oxygen causes so many redraws on listviews, etc. as kwin reveals
SVN commit 939141 by huynhhuu: Remove some palette related lines, which make the toolbox unusable with Oxygen Actually I don't think this is the right way to force widgets to have a transparent background as it even messes up with Plastique's scrollbars (we already had this issue: bug 173547) BUG: 186431 M +0 -12 Widget.cpp WebSVN link: http://websvn.kde.org/?view=rev&revision=939141