The features work correctly in MS Word, but upon export to pdf they fail. Analogical features for Latin and Cyrillic work correctly in the exported pdf file. The font file was crafted in FontForge, the pdf's were viewed in Chrome, Edge and Acrobat with the same results (except for blurry font rendering in Edge, lol). The script I used was as follows (excerpts):
languagesystem armn dflt;
As you can see, I doubled things wherever possible, with no effect. I heard Adobe products had no support for the Serbian language, are there known issues with Armenian as well? Am I doing something wrong?