Cannot select date(Start date and End date) when adding event in Team Calendar

Environment
Confluence 5.10.7
Team Calendar version 5.3.14

Steps to Replicate

1. Install Confluence Team Calendar version 5.3.14
2. Add Calendar and Add events
3. Select date when and to.
   

Expected behaviour
User should be able to adjust or select from start date to end date

Actual Behaviour
Cannot select or choose the desired date

Workaround
Install Team Calendar version 5.3.11