front/src/applications/stdcm/components/StdcmForm/StdcmConfig.tsx

@@ -87,6 +87,7 @@ const StdcmConfig = ({
   const formRef = useRef<HTMLDivElement>(null);
 
   const [formErrors, setFormErrors] = useState<StdcmConfigErrors>();
+  const [ciChanged, setCiChanged] = useState(false);
 
   const { rollingStock } = useStoreDataForRollingStockSelector();
   const towedRollingStock = useStdcmTowedRollingStock();
@@ -175,23 +176,28 @@ const StdcmConfig = ({
   }, []);
 
   useEffect(() => {
-    if (origin.location && destination.location && rollingStock?.id) {
+    setCiChanged(true);
+  }, [origin.location, destination.location]);
+
+  useEffect(() => {
+    if (ciChanged && origin.location && destination.location && rollingStock?.id) {
       setValidationMessage(t('pathfindingStatus.calculating'));
     } else {
       setValidationMessage(undefined);
     }
-  }, [origin, destination]);
+  }, [ciChanged, origin.location, destination.location, rollingStock?.id]);
 
   useEffect(() => {
-    if (pathfinding?.status === 'success') {
+    if (ciChanged && pathfinding?.status === 'success') {
       setValidationMessage(t('pathfindingStatus.success'));
       const timer = setTimeout(() => {
         setValidationMessage(undefined);
+        setCiChanged(false);
       }, 2000);
       return () => clearTimeout(timer);
     }
     return undefined;
-  }, [pathfinding?.status]);
+  }, [pathfinding?.status, ciChanged]);
 
   return (
     <div className="stdcm__body">