I type past the end of a input field and then press backspace to get this crash:
ArgumentOutOfRangeException: startIndex + count > this.length
Parameter name: count
System.String.Remove (Int32 startIndex, Int32 count) (at /Applications/buildAgent/work/c514da0c8183631c/mcs/class/corlib/System/String.cs:1747)
UnityEngine.TextEditor.Backspace () (at C:/BuildAgent/work/ea95e74f6e5f192d/Runtime/Export/TextEditor.cs:166)
UIInput.ProcessEvent (UnityEngine.Event ev) (at Assets/NGUI/Scripts/UI/UIInput.cs:504)
UIInput.OnGUI () (at Assets/NGUI/Scripts/UI/UIInput.cs:486)