C# - Why Does The 0x00 Character Make System.Diagnostics.Debug.WriteLine Not Write A New Line

Dim hex = "41"
Dim text As New System.Text.StringBuilder
For i As Integer = 0 To hex.Length - 2 Step 2
text.Append(Chr(Convert.ToByte(hex.Substring(i, 2), 16)))

[code].....

but yet this fails.. (the output isn't itself in a new line) what's the explanation for that?From what I know, doesn't System.Diagnostics.Debug.Writeline does something which looks like this:

System.Diagnostics.Debug.Write(input)
System.Diagnostics.Debug.Write("
")

so regardless of my input it should always have a newline char even if there is a terminating 00 char in my input?