No manual scoring possible for Quiz in Forms

Hello everyone!

Recently the possibilities for correction / scoring seem to be limited for quiz questions. If I correct the exam based on the questions, short questions are only corrected automatically, the possibility to give partial points is only available for long answers. Even with multiple-choice questions, I can no longer set manual points. As soon as I set 1/2 points, for example, the display automatically jumps back to 0/2. I very much hope that these restrictions represent a temporary bug and will be quickly fixed again. Do you currently have similar experiences?

Best regards