Dear list,
Following MWE allows to reproduce the problem. Text right margin looks completely misaligned.
Thanks
\definefontfeature[myfeature][mode=node, kern=yes, protrusion=quality, expansion=quality]
\definefontfamily[mainfont][serif][EBGaramond][features=myfeature]
\setupbodyfont[mainfont, 9pt]
\setupalign[hz]
\starttext
\input knuth
\stoptext