<xctk:TimePicker/>
A. Initially the control displays no text.
B. Type a single keyboard symbol, e.g. a digit. Now the control displays the only typed symbol.
C. Press the left arrow key.
Result: An unhandled exception of type 'System.IndexOutOfRangeException' occurred in Xceed.Wpf.Toolkit.dll
The same problem is with DateTimePicker.
A. Initially the control displays no text.
B. Type a single keyboard symbol, e.g. a digit. Now the control displays the only typed symbol.
C. Press the left arrow key.
Result: An unhandled exception of type 'System.IndexOutOfRangeException' occurred in Xceed.Wpf.Toolkit.dll
The same problem is with DateTimePicker.