Hi Raouf,
Greetings from Syncfusion support.
We have validated your requirement. The reported issue not reproduced in our end. We have prepared the sample based on your requirement.
Please give below details. That will help us to provide exact solution at earliest.
1. When you have update the state?
2. How many datepicker components you have rendered in your application?
3. Based on state property in which event you have shown or hide the popup?
4. If possible please reproduce your issue in our above attached sample and revert to us.
Regards,
Sureshkumar P