[NTG-context] [***SPAM***] \setbreakpoints[compound] does not work

Hi, is there a reason why hyphenation of compound "Lwk-Maut" does not work in following example? \showframe \mainlanguage[de] \setbreakpoints[compound] \setnumber[footnote][114] \starttext test {\startfootnote[ftn115] siehe Schlussbericht der zuständigen Bund-Länder-Arbeitsgruppe „Verkehrsverlagerungen info Lkw-Maut“, BT-Dr16/298 v.~13.\,12.\,2005, 2, 3. \stopfootnote}. \stoptext Steffen (vers. 2012.03.13)