VAVenkatesh Ayothi Raman Syncfusion Team February 1, 2017 08:43 AM UTC
Thanks for contacting Syncfusion support.
This issue happens when we enable both AllowEditing(false) and EditType properties in Grid. This is not recommended way and we suggest you to disable the AllowEditing property for date column like as follows,
VAVenkatesh Ayothi Raman Syncfusion Team February 3, 2017 10:09 AM UTC
We considered this requirement “AllowEditng property is not working correctly for Datetimepicker column” as bug and a support incident has been created under your account to track the status of this requirement. Please log on to our support website to check for further updates.