Υes, there should be.
This is an issue that we've been aware of for a very, very long time. The double accent rule wasn't taken into consideraion for all sentences back when the course was still being developed in Alpha. We can't edit the original sentence, and even if we deleted it and readded it, it wouldn't change. All we can do is include the translations with the double accent as alternatives, so that they get marked as correct. We're sorry for the incovenience. :/