diff --git a/apiserver/bll/project/project_bll.py b/apiserver/bll/project/project_bll.py
index a28b756..04ebb4b 100644
--- a/apiserver/bll/project/project_bll.py
+++ b/apiserver/bll/project/project_bll.py
@@ -1084,6 +1084,7 @@ class ProjectBLL:
         if not filter_:
             return conditions
 
+        or_conditions = []
         for field, field_filter in filter_.items():
             if not (
                 field_filter
@@ -1096,12 +1097,28 @@ class ProjectBLL:
             helper = GetMixin.NewListFieldBucketHelper(
                 field, data=field_filter, legacy=True
             )
-            conditions[field] = {}
+            field_conditions = {}
             for action, values in helper.actions.items():
                 value = list(set(values))
                 for key in reversed(action.split("__")):
                     value = {f"${key}": value}
-                conditions[field].update(value)
+                field_conditions.update(value)
+            if (
+                helper.explicit_operator
+                and helper.global_operator == Q.OR
+                and len(field_conditions) > 1
+            ):
+                or_conditions.append(
+                    [{field: {op: cond}} for op, cond in field_conditions.items()]
+                )
+            else:
+                conditions[field] = field_conditions
+
+        if or_conditions:
+            if len(or_conditions) == 1:
+                conditions["$or"] = next(iter(or_conditions))
+            else:
+                conditions["$and"] = [{"$or": c} for c in or_conditions]
 
         return conditions
 
diff --git a/apiserver/database/model/base.py b/apiserver/database/model/base.py
index 472c8db..3847b63 100644
--- a/apiserver/database/model/base.py
+++ b/apiserver/database/model/base.py
@@ -163,6 +163,7 @@ class GetMixin(PropsMixin):
             self.allow_empty = False
             self.global_operator = None
             self.actions = defaultdict(list)
+            self.explicit_operator = False
 
             self._support_legacy = legacy
             current_context = self.default_operator
@@ -172,6 +173,7 @@ class GetMixin(PropsMixin):
                     self._support_legacy = False
                     if self.global_operator is None:
                         self.global_operator = d.operator
+                        self.explicit_operator = True
                     continue
 
                 if self.global_operator is None:
diff --git a/apiserver/tests/automated/test_subprojects.py b/apiserver/tests/automated/test_subprojects.py
index da26a62..88012eb 100644
--- a/apiserver/tests/automated/test_subprojects.py
+++ b/apiserver/tests/automated/test_subprojects.py
@@ -90,6 +90,18 @@ class TestSubProjects(TestService):
         self.assertEqual(p.basename, "project1")
         self.assertEqual(p.stats.active.total_tasks, 1)
 
+        projects = self.api.projects.get_all_ex(
+            parent=[test_root],
+            children_type="report",
+            children_tags=["__$any", "__$not", "test1", "test2"],
+            shallow_search=True,
+            include_stats=True,
+            check_own_contents=True,
+        ).projects
+        self.assertEqual(len(projects), 2)
+        for p in projects:
+            self.assertEqual(p.stats.active.total_tasks, 1)
+
     def test_query_children(self):
         test_root_name = "TestQueryChildren"
         test_root = self._temp_project(name=test_root_name)