There was a thread some time ago on this List with explainations of this behavior!
Tom Von meinem iPhone gesendet > Am 05.03.2014 um 01:03 schrieb Jeff Martin <j...@reportmill.com>: > > I can't quite wrap my head around why when I specify an -fx-font-size of 9pt > in CSS, it turns into a 12 pt font in my rendered node. I suppose CSS is > upscaling for my 96 dpi device, but it makes other measurements that depend > on that setting potentially wrong. > > Any suggestions on how I should be thinking about this (other than that this > is a bug :-)? > > jeff