修改

src/components/course/lesson-form.vue

@@ -822,6 +822,7 @@
             this.dayObj.GuestList.forEach(x => {
               if (x.IsCheck == -1) {
                 count++;
+                x.StudyNum = this.dayObj.DefaultMinutes;
               }
             })
             if (count == this.dayObj.GuestList.length) {