Found a bug in the current time picker when trying to clear a value out. Please see the dojo:
https://dojo.telerik.com/@rareddy/IWijojuf
Steps to reproduce the bug are on the page:
Click "Clear Time".
Then click the time icon to set a new time
The time control pops up. Immediately click "Set" with the default time controls chosen. "12:NaN PM" appears in the time selection and cannot be set to a valid time.