Complete union in for_person_q

aleksis/apps/chronos/managers.py

@@ -102,9 +102,15 @@ class LessonEventQuerySet(RecurrencePolymorphicQuerySet):
 
         amended = (
             LessonEvent.objects.filter(
-                Q(amended_by__isnull=False) & (Q(teachers=person) | Q(groups__members=person))
+                Q(amended_by__isnull=False) & Q(teachers=person)
             )
             .values_list("amended_by__pk", flat=True)
+            .union(
+                LessonEvent.objects.filter(
+                    Q(amended_by__isnull=False) & Q(groups__members=person)
+                )
+                .values_list("amended_by__pk", flat=True)
+            )
             .union(LessonEvent.objects.filter(teachers=person).values_list("pk", flat=True))
             .union(LessonEvent.objects.filter(groups__members=person).values_list("pk", flat=True))
         )