Bug report

When the mobile option of the Scheduler is set to true and the user double click/double-tap the Edit dialog is opened, but when saving the event, the following error is thrown in the console:

'Cannot read property 'isOccurrence' of undefined'

Reproduction of the problem

1. Open the Dojo example in the emulator.
2. Double click fast to edit or create an event
3. Try to save the event

Current behavior

An error is thrown in the console (screencast)

Expected/desired behavior

There should be no error in the console

Environment

• Kendo UI version: 2020.3.1021
• Browser: [all ]