Hi Ajay,
We have validated the reported query on our end. Unfortunately, we couldn’t reproduce the reported issue as per your scenario. We have attached a sample for reference. Also, we request you to provide additional details about the issue as mentioned below, This will help us validate the issue further and provide you with a better solution.
1. Is the DropdownList component rendered within any other component or alone?
2. Simple Issue reproducing sample (or modify the shared sample).
3. Issue replication steps.
4. Video illustration of the issue.
Sample : https://stackblitz.com/edit/avdv8c?file=index.js,index.html
Regards,
Udhaya Kumar D