Hello Please download "Antykwa Półatowskiego" fonts set (TrueType or OpenType) http://www.gust.org.pl/projects/e-foundry/poltawski/download/index_html and check it in LibreOffice 3.4 or 3.5.1 You can see that every font is separated (styles from family font) and it also has abridged name (to AntPolt*) http://wstaw.org/h/11a8b45ae1a/ OpenOffice.org 3.2 (and other softwares like Inkscape or Firefox) has no errors. http://wstaw.org/h/b9398e27b25/
This bug still exist in 3.6 RC2.
RESOLVED: this is a bug in the font, not in LibreOffice. If you download the font and open it with FontForge or a font manager such as Windows Font Viewer, you can see that its name is actually AntPolt.
Indeed, Font Viewer from Windows shows "AntPolt" though Font Viewer from Ubuntu shows full name (Antykwa Poltawskiego). Even if there is not bug in LibreOffice, is any chance for back to behavior from OO.o 3.2 or make it works like Firefox or Inkscape?