Print QGraphicsView with QGraphicsSvgItem to postscript

Hello,
I need to print my QGraphicsView with QGraphicsSvgItem to a postscript/pdf file.
Everything look nice, but my QGraphicsSvgItem is rendering as a raster, not as a vector graphic. Is there any way to change this?

QPrinter printer(QPrinter::HighResolution);
printer.setOutputFormat(QPrinter::PdfFormat);
printer.setOutputFileName(fileName);
updatePrinter(&printer);

thx in advance
Kacper

I can't edit my previous post. Something's wrong after site update.

The problem was in item settings.

Code:

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item->setCacheMode(QGraphicsItem::DeviceCoordinateCache);
item->setCachingEnabled(true);

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When it's cached it would render to file as a raster,
when i turrned off caching it gave me a vector file.

Is it a bug?