ERP5; work around sort on creation date precision in Alarm.getLastActiveProcess

product/ERP5/Document/Alarm.py

@@ -345,11 +345,11 @@ Alarm Tool Node: %s
       limit = 1
     else:
       limit = self.isActive() and 2 or 1
-    active_process_list = self.getPortalObject().portal_catalog(
-      portal_type='Active Process', limit=limit,
-      sort_on=(('creation_date', 'DESC'),
-               ('id', 'DESC', 'UNSIGNED'),),
-      causality_uid=self.getUid())
+    active_process_list = sorted(self.getPortalObject().portal_catalog(
+      portal_type='Active Process',
+      sort_on=(('creation_date', 'DESC'), ),
+      causality_uid=self.getUid(),
+      limit=5,), key=lambda x:x.getCreationDate(),)[-limit:]
     if len(active_process_list) < limit:
       process = None
     else: