After removing an item with it's remove "X" button, two mouse clicks are required in order to lose the focus from the control.

Available in LIB version 2016.2.606, it will be also available in the 2016 R2 SP1 release.

Clicking the ScrollViewer of the control causes the focus to be retained by the RadAutoCompleteBox, leading to double mouse click required in order to access outside control.

Also the mouse cursor is changed IBeam value rather than the default Arrow value.

The fix is available in the 2016 R3 SP1 release.

Should be clicked somewhere else afterwards in order to refresh the cursor.
The fix is available in R2 2016 SP1.

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

When you start typing, the dropdown appears and then you leave the AutoCompleteBox without clicking, the cursor is not changing back to arrow.

As a workaround of the issue you could manually release the mouse capture in the Populated event handler of the control as shown below:


 private void AutoCompleteBox_Populated(object sender, System.EventArgs e)
        {
            if (Mouse.Captured is RadAutoCompleteBox)
            {
                (sender as RadAutoCompleteBox).ReleaseMouseCapture();
            }
        }

The workaround is to set String.Empty for TextSearchPath before setting the new value for the DisplayMemberPath

The current workaround is to directly set the value of the underlying TextBox instead:

this.RadAutoCompleteBox.ChildrenOfType<TextBox>().First().Text = "1 I";

When the SelectionMode of RadAutoCompleteBox is changed, the search text is cleared. However, this clears only the Text property of the underlying TextBox element. The SearchText property of the control is not cleared.

this.autoCompleteBox.SelectionMode = AutoCompleteSelectionMode.Multiple;
this.autoCompleteBox.SearchText = null;

As a workaround the Foreground property of the AutoCompleteBox can be set to Black.

The control is focused after the SelectionChanged event is triggered when selection is made with the mouse

Initially the events is triggered correctly and after switching between TabItems the event is not longer triggered. 

The issue also is reproducible inside RadDocking control.

The filtering mechanism is not triggered if the drop down of the control is opened and its ItemsSource is changed 

Exposed the HandleKeyDown method of RadAutoCompleteBox. In order to navigate to the next control when Tab key is pressed, the method should be overridden as shown below:

public class CustomAutoCompleteBox : RadAutoCompleteBox
{
protected override bool HandleKeyDown(Key systemKey)
{
return base.HandleKeyDown(systemKey) && systemKey != Key.Tab;
}
} 
Available in LIB version 2016.2.525, it will be also available in the 2016 R2 SP1 release.