Fix: Check filtered groups. (Redmine issue: #6227)

lib/mentat/reports/event.py

@@ -570,8 +570,10 @@ class EventReporter(BaseReporter):
                     acc.append((src, filtered_groups, fallback_groups))
 
             for src, filtered_groups, fallback_groups in acc:
-                if not filtered_groups and not fallback_groups:
-                    continue
+                if not filtered_groups:
+                    if not fallback_groups:
+                        continue
+                    filtered_groups = fallback_groups
                 passed = True
                 groups = (tuple(filtered_groups), tuple(fallback_groups))
                 if groups not in result: