[NTG-context] \switchtobodyfont fails to load font with some sizes

Dear list, with some font sizes, \switchtobodyfont loads Latin Modern Roman instead of the specified typeface: \definefontfamily [firstfamily] [serif] [TeX Gyre Bonum] \definefontfamily [secondfamily] [serif] [TeX Gyre Termes] \setupbodyfont [firstfamily, 60pt] \starttext abc {\switchtobodyfont [secondfamily, 60pt] abc} abc abc {\switchtobodyfont [secondfamily, 50pt] abc} abc \stoptext Kind regards, Joshua Krämer