B4J Question jPDFJet accented characters missing

Hi All,
I tried this nice lib with accented chars, but I miss some: őŐűŰ
The sample text file contains theese: "ElectricityöüóőúéáűíÖÜÓŐÚÉÁŰÍ -" (in utf-8 encoding)
The printed PDF contains theese:

And the font OpenSans-Light.ttf contains theese:

Apparently all the characters are there, but not in PDF. Has anyone encountered this problem?
Thanks in advance
Steven