I have sent a message to Lars Knoll of Trolltech, the person behind the bidi engine, and received this confirmation from him.
Lars wrote: Hi Munzir, I can confirm that the fonts are not working with Qt 3.3.6. The problem seems to be that the font has broken opentype tables (I get an error about some invalid subtable from the opentype code). What pango seems to do is to fall back to some non opentype shaping algorithm in this case, while we do not (as the font contains open type tables for arabic). I'm not sure why it worked in 3.3.5 though. -- Arabic support severely broken https://launchpad.net/bugs/11753 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs