Hi,
testing the new language goodies feature for ligature prevention, I found that hard line breaks seem to interfere somehow with the ligature prevention mechanism:
==========================
\setuplanguage[de][ goodies={lang-de.llg}]
\startlanguageoptions[de]
auf|jubeln
\stoplanguageoptions
\mainlanguage[de]
\definefontfeature[default][default][dlig=yes,liga=yes]
\definefontfamily[times][rm][Times New Roman]
\setupbodyfont[times]
\starttext
aufjubeln
aufjubeln\\
auffliegen
auffliegen\\
begrifflich
begrifflich\\
\stoptext
======================
Best,
Denis