Form with combo onchange event weird behavior

I have a combo inside a form and onchange event.
When i press “Select All” or “Clear all” the on change event gets called for each item in the array. In case there are hundreds of elements in the combo the performance gets degraded really badly.

As far as i could test, the same happens when u pass array of items inside setValue() method.

Thank you for your report.
The problem was confirmed. We’ll try to fix it in one of the future updates.
I’ll inform you about any progress on this issue.