Double click on item from auto-complete drop down appends the item twice in RadAutoCompleteBox.

Symbol characters are process as mnemonics in RadAutoCompleteBox when Italian keyboard is used and non-modifier (Alt or Ctrl) keys are pressed.

Inserting @ symbol fails when french culture is used in RadTextBoxControl

If you click in the view-port of the RadTextBoxControl and then on the vertical scroll bar, you will not be able to scroll vertically.

When the AcceptReturn of RadTextBoxControl is enabled, the ENTER key is processed by the accept button of the form.

Themes of RadAutoCompleBoxElement cannot be reused when the element is hosted in RadGridView.

NullReferenceException is thrown in RadAutoCompleteBox, when the form is closed and new items are added to its auto complete data source.

The spellchecker gives wrong suggestion for the word didn't't in both spelling modes.

Handling of KeyPress event of RadTextBoxControl does not suppress inserting new character.

The TextChanged event of RadDateTimePicker is not fired

You can't cancel the TextChanging event of RadTextBoxElement by setting e.Cancel to true.

You can't set the focus to the hosted textbox control in RadTextBox by calling Select or Focus on the control.

If you try to set MaskedEditBoxElement.BackColor to Control, the BackColor of the TextBoxItem will not be changed. However, if you set the BackColor of the MaskedEditBoxElement to Red, the color of the TextBoxItem will be changed as expected.

When a user selects a known color, the SelectedColor property returns an RGB value instead of the known color.

Resolution: The Color.Name, IsNamedColor and IsKnownColor properties are set properly. 

When Mask is n3, MaskType is Numeric and you first type something like 1230.00 and then you try to type '5' between '1' and '2', '5' goes after the zero before the point. So you get 12305.000 as a result, but it should be 15230.000.

In certain cases RadSpinEditor.Value property is not updated correctly. This happens, because RadSpinEditor does not lose focus as it is supposed to.

When the Anchor of RadTextBox is set to (Left, Top, Right) and Multiline is true, the Height of RadTextBox becomes equal to 0.
This is valid only for Windows XP.

The KeyDown event is not being fired when the user starts entering text in RadSpinEditor. Currently, the developer should subscribe to the KeyDown event of the TextBoxItem

Select a date from RadDateTimePicker using the calendar dropdown. Now type another date in the textbox to make a new selection. Open the drop-down and you will see that there are two dates 'selected'. The issue occurs, because when you select from the calendar, you set the cell to Focused.Selected. When you then type a date in the textbox, you change the Focused cell, but the selection on the previous cell remains. So, you end up with two 'selected' cells. The workaround is to clear the selection on opening the dropdown: 

        void radDateTimePicker1_Opening(object sender, CancelEventArgs e)
        {
            calendar.SelectedDates.Clear();
        }

The sender of RadDateTimePicker.KeyPress event is currently HostedTextBoxBase which is not the correct sender to expose.