I am sorry you feel that way, Andrzej. 

It is very important that I do not provide false information in this public portal and make people think something will happen when it will, in fact, not. I do believe that being open and frank up front is better for everyone.

If you do have any concerns with the way we handle requests or the quality of our tools, feel free to open a private ticket where we can discuss things in more detail.

Regards,
Marin Bratanov
Progress Telerik

Hi Andrzej,

If you start comparing one component with the dozens of technologies and vendors out there you will inevitably find shortcomings. 

At the moment, we do not consider resizable dropdowns good UX and we do not intend to implement them in the foreseeable future.

Regards,
Marin Bratanov
Progress Telerik

Hello Andrzej,

I've never seen a resizable dropdownlist - neither in the native browser implementations, nor in component suites.

The resizable popup we will have is the Window component and if you need such a large list that resizing is necessary, you can put a grid with selection in a window and let the user resize it.

Regards,
Marin Bratanov
Progress Telerik

Hello Andrzej,

The Window will become resizable in a future release (you can Follow that here, your Vote is already in).

The other dropdowns will not, however, and neither will the animation container. If you want a popup that's resizable you can use a Window without a titlebar and without built-in commands. For the dropdowns - a resize handle will be hard to hit and is likely to result in unexpected selections or the dropdown closing because the user would click outside of it instead of the resize handle. Moreover, that would overcomplicate the components because that would require exposing two-way binding for the PopupWidth and PopupHeight parameters, which is also going to be a performance hit.

Regards,
Marin Bratanov
Progress Telerik