having a combobox inside the collectionview, click on the combo to open, then click again on the same location where you clicked to open the combo and exception occurs.

this is the stack trace: 

 at WinRT.ExceptionHelpers.<ThrowExceptionForHR>g__Throw|38_0(Int32 hr)
   at ABI.Microsoft.UI.Input.IGestureRecognizerMethods.ProcessDownEvent(IObjectReference _obj, PointerPoint value)
   at Microsoft.UI.Input.GestureRecognizer.ProcessDownEvent(PointerPoint value)
   at Telerik.Maui.NativeGestureRecognizer.HoldGestureRecognizer_PointerPressed(Object sender, PointerRoutedEventArgs e)
   at ABI.Microsoft.UI.Xaml.Input.PointerEventHandler.Do_Abi_Invoke(IntPtr thisPtr, IntPtr sender, IntPtr e)

When having filtering enabled and selecting an item from the dropdown, then deleting a character from the input area, then opening the dropdown and tapping on the selected item in the drop-down, the text in the input area does not update with the selected item.

You have to select another item, then text updates!

Provide an option to modify the ComboBox so there is no space between the ComboBox and the dropdown.

We would like to be able to override the behavior of the Clear button in the editable combo box.

When the user has started typing into an editable combo box, and they click the Clear button before they've selected another item, we want to revert their text to what was in there before they started typing and keep the previously selected item selected, rather than clearing the text and selected item.

If you can add that functionality, even better, but it should be enough to just expose the Clear button's Click event (with a Cancel param or another way to ensure the text isn't cleared), so we can override the current functionality.

Reduce the space between the text and the X button.

I want to reset the scroll position because in our implementation, we have filter buttons that when clicked, fetch a new list from our web API. 

It appears that the scroll position is being saved when a new list is assigned while the ComboBox is not focused.

When setting SelectedItem and using static data for the ItemsSource, Layout cycle detected. Layout could not complete exception is thrown
Setup:

<telerik:RadComboBox x:Name="ComboBox" 
                                 SelectedItem="{Binding SelectedItem, Mode=TwoWay}">
                <telerik:RadComboBox.ItemsSource>
                    <x:Array Type="{x:Type x:String}">
                        <x:String>USA</x:String>
                        <x:String>Uganda</x:String>
                        <x:String>Ukraine</x:String>
                        <x:String>Canada</x:String>
                        <x:String>France</x:String>
                        <x:String>Italy</x:String>
                        <x:String>United Kingdom</x:String>
                        <x:String>China</x:String>
                        <x:String>Japan</x:String>
                    </x:Array>
                </telerik:RadComboBox.ItemsSource>
            </telerik:RadComboBox>