Unexpected change event triggering when using value() method of remote datasource DropDownTree with checkboxes and autoBind false

[Dimitar-Goshev]

Bug report

Unexpected change event triggering when using value() method of remote datasource DropDownTree with checkboxes and autoBind false.

The change event will also be triggered upon data rebinding if a value is already selected in the widget.

Reproduction of the problem

When using value()

1. Run the following Dojo
2. Click on Load button to set the value of the Child item

When rebinding

1. Run the following Dojo
2. Open the drop-down
3. Select an item
4. Click on click me button to rebind data

Current behavior

Script runs through datasource read else, then through datasource read if and then DropDownTree's change event is fired.

NOTE: if there is no setTimeout or if the two nodes are loaded at the same time with no if else clause, then the issue is not reproducible.

Expected/desired behavior

DropDownTree's change event is not fired, when value() method is called.

Environment

• Kendo UI version: 2019.2.619
• Browser: [all]

Similar fixed issue: #4352
Similar NOT fixed issue, but involving filtering as well: #4591

[Dimitar-Goshev]

@zdravkov After the fix the first scenario appears resolved. But the second scenario is still reproducible:

When rebinding
Run the following Dojo
Open the drop-down
Select an item
Click on click me button to rebind data