CIChristopher Issac Sunder K Syncfusion Team April 30, 2019 04:41 AM
Thank you for contacting Syncfusion support.
We are able to reproduce the issue - When we type same digit in the maskEdit, it will skip the character and enter the typed value in the next position. We have confirmed this as a defect in our source and logged a bug report for the same. The fix for this issue will be included in our upcoming patch release which is expected to be rolled out in the second week of May, 2019.
You can track the issue through the below Feedback portal link,