Hi RakhiS,
Greetings from Syncfusion Support.
We checked with your video and understand that the panels content were collapsed during navigation. To replicate the issue, we have created a sample similar to your scenario. We have not faced any issues as mentioned and the panel contents are updated correctly during navigation.
Refer to the sample:
It would be really helpful, if you can modify the above sample so as to replicate your issue. Else, share us details on the components rendered within panels along with your complete code block to serve you better.
Regards,
Sharon Sanchez S.