Hi Aparna,
Thanks for the update.
We are happy to hear from you that the reported problem has been fixed at your end. Based on your another query we would like to let you know that the shared tooltip is created to show the data for multiple series. Also, shared tooltip rendering and mouse hover actions comparatively differ from normal tooltip. In your case you have used single series only, So we suggest you to use single series tooltip to overcome the reported problem.
Kindly revert us, if you have any queries.
Regards,
Kalai.