(In reply to comment #12)
> So the status AFAIK is that everything I've tested works great, with the
> notable exception of Tibetan, which appears to be a regression from KDE3.
I just tested konsole 2.8 using some snippet from
http://www.alanwood.net/unicode/tibetan.html. The result seems fine to me,
although I think some characters are calculated and displayed with wrong width.
Maybe that width problem is related with bug 41744 and bug 186826.