C#: Method ToString of AvroDecimal causes ArgumentOutOfRangeException

Method ToString of class AvroDecimal causes ArgumentOutOfRangeException when Scale is greater than Unscaled number size. Samples:

• 0.001
• 0.01

When Scale as equal as Unscaled number size, the result é wrong, because is missing a "0", Sample:

• 0.1: in this case the result is ".1"