Hi,

The current scenario involves the itemDisabled function being invoked five times for each item when the popup is active.

Example - https://stackblitz.com/edit/angular-natpq9-5uzrh5?file=src%2Fapp%2Fapp.component.ts

It would be preferable to optimize this such that the function is called only once per item.

We just would like to customize the open/close combo selector with two different icons.
Actually, there is no easy way to do that because there is no CSS selector that has two different values based on popupstatus.

The only way is to introduce a login on every combo as shown on link: https://stackblitz.com/edit/angular-2gdnhv?file=app/app.component.ts

we are just asking for a kendo native solition.

Missing scroll event in comboboxes.
We need this to be able to implement paging functionality for big data scrolling.