I am creating a blackletter font and would like to use it with LuaLaTeX, which works fine for nearly everything so far, except for using contextual alternative glyphs (in this case, r→ꝛ after round letters).
Ousia reports that as a bug for
fontspec, and gets the answer that it seems to be a bug in
luaotfload. Is there a workaround or bugfix somewhere out there?