Err.Raise() is ignoring custom description and sou

Question

I have a class module with a Let function that raises a custom error an example is shown below

Private pValue As Double
Public Property Let Value(v As Double)
    If v < 0 Then
        Err.Raise vbObjectError + 1, "error source", "error description"
    Else
        pValue = v
    End If

End Property

In another sub I call the class function on an object (Example) and raise the error by passing a value less than 0. In this same sub I have error handling set up to catch multiple errors based on the error numbers.

Sub TestSub()
Dim Example As Test
Set Example = New Test

On Error GoTo errorHandler
Example.Value = -1
On Error GoTo 0

Exit Sub

errorHandler:
MsgBox Err.Number & "," & Err.Description & " in " & Err.Source

End Sub

The message box prints out the correct error number but the description is the generic Method ~ of object ~ failed, and the source is the generic VBAProject. I'd really like it to print out the error message I gave to Err.Raise. Does anyone know what the issue is here? I have error handling set to break on unhandled errors.

The message displayed in the message box is:

Method 'Value' of object '_Test' failed

Edit: Updated the code to a full scenario where the problem occurs