Brimstome Dwarf costume

Why does the Riddle Dwarf give the Brimstone Dwarf costume? Eyn sells the other 3 dwarves’ + the Riddle Dwarf’s, so wouldn’t it make more sense for the Riddle Dwarf to give his own costume and for Eyn to have the Brimstone one instead of the Riddle one?

You’re not supposed to be able to create those costumes at the tailor - they’re all supposed to come from the riddle dwarf, so that is a bug.