diff --git a/airflow-core/src/airflow/api_fastapi/core_api/services/ui/connections.py b/airflow-core/src/airflow/api_fastapi/core_api/services/ui/connections.py
index 07d1186d6fabe..68881ac0f108e 100644
--- a/airflow-core/src/airflow/api_fastapi/core_api/services/ui/connections.py
+++ b/airflow-core/src/airflow/api_fastapi/core_api/services/ui/connections.py
@@ -185,7 +185,9 @@ def mock_any_of(allowed_values: list) -> HookMetaService.MockEnum:
                 pass
 
             pm = ProvidersManager()
-            return pm.hooks, pm.connection_form_widgets, pm.field_behaviours
+            pm._cleanup()  # Remove any cached hooks with non mocked FAB
+            pm._init_airflow_core_hooks()  # Initialize core hooks
+            return pm.hooks, pm.connection_form_widgets, pm.field_behaviours  # Will init providers hooks
 
         return (
             {},