It should not have worked =/
Although this is possible in English, we decided to keep only the "standard" word order following this reasoning:
1 - Brazilians learning English aim mainly for improving their skills in order to find better jobs. For that they need good English, and we should enforce that they know the correct word order for questions. If we accept univerted questions, students will not learn the importance of that.
2 - "But even if I'm doing the Portuguese course?" Yes, both the Portuguese and the English course share the same sentences, and every change in translations reflect in both courses. So, because of the English course, we must do this also in the Portuguese course.
For the Portuguese course, we add report messages such as "Please use the standard word order for questions" when the other word order is suggested by users.