das hier habe ich auf der seite von woocommerse gefunden vielleicht hilfts jemenden
We found the solution how to resolve bug with translation. You should remove old version of translation. For Example if your language is France. Go to wp-content->languages->plugins->woocommerce-fr_FR.po and woocommerce-fr_FR.mo and remove those. Than go to admin panel and you will see that you can update your language. Update It. Done.