When custom items populating with delay is implemented the first item in the drop down is not highlighted

Add a possibility to set minimum populate delay to the control. It would be useful if a property like MinimumPopulateDelay is available to be set which would cause the populating of items to be delayed. Such feature would be helpful for cases when making requests to web server etc.

Esc should be handled only when the popup is opened.

If the control is placed inside ScrollViewer when the mouse is over the AutoCompelteBox control the mouse wheel is handled leading to no scrolling of the ScrollViewer.

On start up a Binding error is thrown in the Output for ElementName=WatermarkTextBox.

Available in LIB version 2016.3.1017, it will be also available in the 2016 R3 SP1 release. 

As a developer I would like to be able to implement a custom highlighting logic of the items in the DropDown portion of the control so that I could implement a "best" matched item highlighting.

Make it possible to override the functionality of keystrokes in the control. A useful case is when placing the control inside RadGridView's CellEditTemplate and wanting to leave cell editing mode by pressing the escape keyboard key.

1. RadAutoCompleteBox with an ObservableCollection set to its ItemsSource

2. The ObservableCollection is populated on the server side once the SearchText of the control changes.

3. The drop down part of the control closes itself even If there are filtered items.

Make it possible to display text e.g. "No result" when there are no filtered items. Here is an example of this http://i.stack.imgur.com/HVaxP.png

Available in the R3 2016 Release.

Please check our help article for more information:
http://docs.telerik.com/devtools/wpf/controls/radautocompletebox/features/key-properties#setting-noresultscontent-noresultscontenttemplate-properties

For example changing the highlighted index to be the first possible in SuggestAppend AutoCompleteMode.

If the AutoCompleteBox is in SelectionMode="Single" editing the text of the SelectedItem will cause the textbox's CaretBrush to go to the end of the text.

If the SelectedItem is initially bound to an object and Tab focus passed through the control the text in it disappears.

AutoCompleteBox cannot be focused on the page load.

If you have RadAutoCompleteBox above RadPanelBarItems and the expanded drop down menu (of the RadAutoCompleteBox) covers them, if you click over some of the drop down items the RadPanelBarItem below gets clicked too.
The fix is available in  Q2 2013 Release.

When an Item is selected, the SearchText property should be updated so it shows the item's text. At the moment it stays with the last entered text. The scenario is valid only for Single mode