diff --git a/visual_workflow_builder/backend/api_v3/dag_execute.py b/visual_workflow_builder/backend/api_v3/dag_execute.py
index 3e4c41957..0c3d95c96 100644
--- a/visual_workflow_builder/backend/api_v3/dag_execute.py
+++ b/visual_workflow_builder/backend/api_v3/dag_execute.py
@@ -921,10 +921,23 @@ def execute_windows():
             if vwb_type in _ANCHOR_CLICK_TYPES:
                 anchor_id = action.get('anchor_id')
                 if anchor_id:
+                    anchor_meta = _load_anchor_metadata(anchor_id)
+
+                    # Calculer les coordonnées du centre du bbox (fallback si visual échoue)
+                    if anchor_meta:
+                        bbox = anchor_meta.get('bounding_box', {})
+                        orig = anchor_meta.get('original_size', {})
+                        orig_w = orig.get('width', 1920)
+                        orig_h = orig.get('height', 1080)
+                        if bbox.get('x') is not None and orig_w > 0 and orig_h > 0:
+                            cx = (bbox['x'] + bbox.get('width', 0) / 2) / orig_w
+                            cy = (bbox['y'] + bbox.get('height', 0) / 2) / orig_h
+                            action['x_pct'] = round(cx, 4)
+                            action['y_pct'] = round(cy, 4)
+
+                    # Tenter aussi le visual_mode (template matching)
                     anchor_b64 = _load_anchor_image_b64(anchor_id)
                     if anchor_b64:
-                        # Charger les métadonnées pour le bounding_box de référence
-                        anchor_meta = _load_anchor_metadata(anchor_id)
                         target_spec = {
                             'anchor_image_base64': anchor_b64,
                             'anchor_id': anchor_id,