[NTG-context] Some ligatures don't work in latest LMTX

Hi everyone. The following example works fine with MkIV, but fails with latest LMTX. To be specific, the lam-alif ligature isn't working. Compile with both to see differences. Majalla is a Windows font, so I guess it's available for testing: \mainlanguage[arabic]\definefontfeature [arabic] [mode=node,language=dflt,script=arab, init=yes,medi=yes,fina=yes,isol=yes, liga=yes,dlig=yes,rlig=yes,clig=yes, mark=yes,mkmk=yes,kern=yes,curs=yes]\definefontfamily[main][serif][sakkalmajalla][features=arabic]\setupbodyfont[main]\setupdirections[bidi=global]\starttext أهلاً وسهلاً\stoptext Is that a bug or are more features to be specified? Thank you in advance. Jairo