Comment 20 for bug 762167

I have the same issue since a while now, installing 'gtk2-engines-pixbuf' does solve the "problem" of the error lines, but it doesn't fix the theme problem.

For instance, when running a Java app, that uses JInternalFrames (sorry if this is the only example I have but I see it every day), if 'gtk2-engines-pixbuf' is not installed then the inner frames are drawn in the old GTK way (which looks pretty awful when combined with the ambiance theme https://launchpadlibrarian.net/94538299/newimage.png), but, if 'gtk2-engines-pixbuf' is installed it shows a badly drawn frame border as you can see here https://launchpadlibrarian.net/83306890/windowbug.png in Bug #878937

I'm not actually know if that is the old GTK way, but I do remember having a similar theme some 7 years ago...