Fonts way too large in print preview (seen in Qt Assistant)

As shown in the attached image, the fonts in the print preview are way too large. This works fine with the latest Qt 4.6, but it's broken in current Qt 4.7.

(I haven't checked whether the alpha already had this issue, but I thought selecting 4.7.0-Beta as affected was a bit strange seen as it isn't there yet, so I opted for 4.7.0-TechPreview)