Bug report

Reproduction of the problem

Dojo example: https://dojo.telerik.com/aGidAkuP/2

1. Double click an event to edit it.
2. Enter and invalid hour (e.g., 25:00) or some text in the Start or the End DateTimePicker.
3. Click the "Save" button.

Current behavior

The validation message appears for a fraction of a second and then disappears. No indication of which field is invalid remains. If a SASS theme is used, there is some indication - a red border around the invalid field appears.

Expected/desired behavior

The validation message remains until a valid date is entered in the DateTimePicker.

Environment

• Kendo UI version: 2021.1.224
• jQuery version: x.y
• Browser: [all]