Devexpress textbox MaskSettings.Mask for digit with 2 decimal place is not working

I am using Html GridView and trying to setup a textbox with min value 0.00 and max value 2.00 (2 decimal places).
I use masksettings.Mask = "<0…2>.<0…9><0…9>" which works good with setting max value input to be 2.00, the only issue comes with you enter 1.0X ; X can be any digit from 1 to 9 it automatically converts to 1.X0. I wanted to know if this is a devexpress bug.

C#
settings.Columns.Add(column => {  
            column.FieldName = "DigitTest";  
            column.Caption = "Test";  
            column.ColumnType = MVCxGridViewColumnType.TextBox;  
            var textBoxProperties = column.PropertiesEdit as TextBoxProperties;  
            textBoxProperties.DisplayFormatString = "{0:N2}";;  
            // textBoxProperties.MaskSettings.Mask = "#.##"; // tried with this as well and doesn't work.  
            textBoxProperties.MaskSettings.Mask = "<0..2>.<0..9><0..9>";  
            textBoxProperties.ValidationSettings.RegularExpression.ErrorText = "The number must be in the range of 0...2";