diff --git a/client/src/pages/Calendar.tsx b/client/src/pages/Calendar.tsx
index 1261f4e..7bf0f54 100644
--- a/client/src/pages/Calendar.tsx
+++ b/client/src/pages/Calendar.tsx
@@ -93,7 +93,8 @@ export default function Calendar() {
         startDate: format(monthStart, 'yyyy-MM-dd'),
         endDate: format(monthEnd, 'yyyy-MM-dd')
       });
-      if (selectedStoreId && user?.role === 'admin') {
+      // CRITICAL FIX: Appliquer le filtrage par storeId pour TOUS les rôles, pas seulement admin
+      if (selectedStoreId) {
         params.append('storeId', selectedStoreId.toString());
       }
       
diff --git a/replit.md b/replit.md
index 9064f3b..3dd8e79 100644
--- a/replit.md
+++ b/replit.md
@@ -34,7 +34,7 @@ The platform is built with a clear separation of concerns, utilizing a modern fu
 - **Weather Integration:** A comprehensive weather interface displaying detailed conditions from the Visual Crossing API, with French language support, intelligent date comparison, and automatic geolocation detection.
 - **Order and Delivery Management:** Full CRUD operations for orders and deliveries, including linking orders to deliveries and managing their statuses.
 - **Reconciliation:** Functionality for reconciling Bills of Lading (BL) and invoices with immediate UI updates.
-- **Task Management:** A comprehensive task management system with advanced temporal features, intelligent sorting (pending > priority > date), due dates with calendar selector, visual indicators for overdue/urgent tasks, filters by due date, Kanban and list views, and colored badges for temporal status. Includes start dates with role-based visibility.
+- **Task Management:** A comprehensive task management system with advanced temporal features, intelligent sorting (pending > priority > date), due dates with calendar selector, visual indicators for overdue/urgent tasks, filters by due date, Kanban and list views, and colored badges for temporal status. Includes start dates with role-based visibility. **CRITICAL GROUP FILTERING FIX (August 2025)**: Fixed group selection persistence issues - all pages (Tasks, Orders, Deliveries, Calendar) now properly apply selectedStoreId filtering for ALL user roles, not just admin. Prevents mixed data display after page reload.
 - **Information System (Announcements):** A complete announcement system with priority levels (normal, important, urgent), role-based access control (admin: full CRUD; others: read-only), intelligent sorting by priority and date, and store-based filtering for administrators. Includes an automatic dashboard modal for recent announcements.
 - **DLC Module:** Permissions allow admin, director, and manager roles to validate DLC products. Includes explanatory tooltips for UX enhancement.
 - **Reporting:** Statistical reporting, including monthly summaries of deliveries.