Makes me cringe too as it is almost unheard of. Then again that doesn't mean it's grammatically incorrect. (Many people also cringe if a preposition is at the end of a sentence it is used in. ;) https://ell.stackexchange.com/questions/30443/which-is-the-correct-question-who-has-vs-who-have/31139
I'm using the mobile web interface and the preferred translation is now shown as "who goes", so it seems ok. According to the grammar geeks it seems fine to use the plural too so I'm happy that it's accepted.