Hello Kenneth,
Thank you for the feedback. We really appreciate it.
Regarding the click on expand/collapse button I just wont it to make sure about the scenario. We will change the behavior. A change will be introduced in one of the upcoming internal builds.
Regarding the change event - it has the same behavior as in the Grid as it is implemented as external component. It is triggered every time item is selected, event when the item is already selected. However implementing the above suggestion will change a bit the change event behavior and it will not be triggered on expand/collapse.
Thank you for taking the time to provide us with your valuable feedback.
Regards,
Nikolay Rusev
Telerik
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