I am not sure what could be wrong in your environment, but I have never heard such an issue out of 1000+ users who use the embeddable. I also just test myself to confirm that this works well.

My questions for you are, 1) is the issue consistent? 2) did you customize and add the event handler to your Web app?

window.addEventListener('message', (e) => {

  const data = e.data;

...

Thanks for reply

1)The issue is happening consistently.Suppose i am callee and from side i click on end button on widget then the call is disconnected from my side which is fine but from the caller side the call not disconnected
2)Yes i have used eventhandlers in my app like rc-login-status-notify,rc-call-ring-notify,rc-call-end-notify etc based on our requirements. like as you mentioned above.