DropDownTree change and dataBound events are not triggered if the widget has autoBind: false, checkboxes: true and filtering enabled

[veselints]

Bug report

DropDownTree change event is not triggered if the widget has:

• autoBind: false;
• checkboxes: true:
• filter: "startsWith", or "contains"

DropDownTree dataBound event is not triggered if the widget has:

• autoBind: false;
• checkboxes: true:
• filter: "startsWith", or "contains"

Reproduction of the problem

1. Run Dojo
2. Open the DDT - no dataBound event will be triggered
3. Click on item1 to select it - change event is NOT fired
4. Click on item2 to select it - change event is NOT fired
5. Click on delete button of item1 to delete it - change event is NOT fired
6. Click on DropDownTree's clear button or click inside DropDownTree's input and press Esc button to delete all items - change event IS FIRED in this case.

Current behavior

Change event is NOT fired on steps 2, 3 and 4. It is fired only when deleting all items.

Expected/desired behavior

dataBound and change events are fired.

Environment

• Kendo UI version: 2020.1.219
• Browser: [all]

[veselints]

Also reported in: Ticket ID: 1536547

[veselints]

Calling e.sender.dataSource.fetch() in the open event would force the DropDownTree to fire the above events. It, however, will also force a second read in remote binding scenarios.

[martintabakov]

Also mentioned in Ticket 1581783