"Worf and Martok admire Kahless."
Translation:qeylIS luHo' wo'rIv martaq je.
The contributors of this course agree with you completely. The Duolingo staff and programmers have been made aware of the problem. The software was not designed with Klingon in mind and sometimes recapitalizes sentences that we have entered correctly. The staff and programmers have put it on their to do list to hunt down the problems and find solutions, but it is comparatively low priority and we don't know when it will actually be addressed.