Describe the bug
On Date Of birth Text-box ,not able to open calendar once click on cancel button on Calendar

Component
reference app

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Reference App'
2. Click on '+' icon
3. Tap On Date of birth
4. On calendar, click on Cancel button
5. Again Tap on Date Of Birth
6. Observe behavior

Expected behavior
User should be able to open and close calendar anytime

Screenshots
If applicable, add screenshots to help explain your problem.

Smartphone (please complete the following information):

• Device: [e.g. Lenovo Tab
• Android version:10

Additional context
On click back button and again come on add patient, user is able to open calendar.