Hi Ashwini,
Greetings from Syncfusion support.
Based on your shared information, we suspect that you want to enter the date dynamically to the datepicker component. We have created the sample based on your scenario and cannot replicated the reported issue in our end.
If still your issue persists. Please revert us with below details
1. Share your Syncfusion package version.
2. If possible, please replicate the issue with above attached sample and share the sample with details issue replication steps.
These details will help us to replicate and update the exact solution as earlier as possible.
Regards,
Sureshkumar P