Issue in PDFDocument with the font Avenir

Hi all, I have an issue in PDFDocument where the Avenir and AvenirHeavy fonts are rendered incorrectly. A customer reported that Acrobat Reader for Windows reports that “The font ‘AvenirHeavy’ contains a bad /BBox.”

The attached screenshot shows how it is rendered on macOS.

This is the code used to generate the PDF:

var pdf As new PDFDocument(600, 800)

var g As Graphics = pdf.Graphics

g.FontName = "Avenir"
g.FontSize = 20
g.DrawText("Avenir", 10, 50)

var file As FolderItem = SpecialFolder.Desktop.Child("PDF_BadBBox.pdf")

Try
  pdf.Save(file)
  
  file.Open
  
Catch e As IOException
  MessageBox(e.Message)
End Try

Adding pdf.EmbeddedFonts = True does not help, it only changes the position of the capital letter A.

Is it an issue in my code, in Xojo, and do you know of any workaround?

Edit: using Xojo 2024.4.2 on macOS 14.7.1

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