[Bug 50885] New: PdfSharp creates invalid PDF files

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50885

Bug ID: 50885
           Summary: PdfSharp creates invalid PDF files
           Product: Wine
           Version: 6.5
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 69696
  --> https://bugs.winehq.org/attachment.cgi?id=69696
Minimal example with PdfSharp

PdfSharp (PDF library for .NET) creates invalid PDF files on Wine. Ghostscript
is able to fix the files but reports: ”Error: Unknown operator: '-..' looks
like a malformed number, replacing with 0.”

I've attached a shell script which builds a minimal example with C# / PdfSharp
and demonstrates the error with Ghostscript. Running with Mono (without Wine)
works. Debugging further would probably need a dive into PdfSharp.

In practice, this affects Purple Pen course setting software for orienteering.