I think I solved a bit of the time ended

src/exams/Writing.tsx

@@ -23,6 +23,12 @@ export default function Writing({exam, showSolutions = false, onFinish}: Props)
 	const {hasExamEnded, setHasExamEnded} = useExamStore((state) => state);
 	const {exerciseIndex, setExerciseIndex} = useExamStore((state) => state);
 
+	useEffect(() => {
+		if (hasExamEnded && exerciseIndex === -1) {
+			setExerciseIndex(exerciseIndex + 1);
+		}
+	}, [hasExamEnded, exerciseIndex, setExerciseIndex]);
+
 	const scrollToTop = () => Array.from(document.getElementsByTagName("body")).forEach((body) => body.scrollTo(0, 0));
 
 	const nextExercise = (solution?: UserSolution) => {