[Bug 45417] New: Proprietary .NET 4.x program using Solid Framework .NET PDF OCR libraries generates different Word files in Wine compared to Windows

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=45417

            Bug ID: 45417
           Summary: Proprietary .NET 4.x program using Solid Framework
                    .NET PDF OCR libraries generates different Word files
                    in Wine compared to Windows
           Product: Wine
           Version: 3.11
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: programs
          Assignee: wine-bugs at winehq.org
          Reporter: s.jegen at gmail.com
      Distribution: ---

Created attachment 61734
  --> https://bugs.winehq.org/attachment.cgi?id=61734
Word conversion result Linux

A proprietary program using the .NET SolidFramework for PDF processing with OCR
produces different output when ran on Wine compared to Windows (both result
files attached).

The binaries in both cases differ only in the development license used. The dev
licenses are machine specific so we had to generate one for the Wine
environment in order to get our program to run. The dev license do not differ
in capability. All the dll files are the exact same version (I compared the
sha256 hashes).

The only difference between the Windows and the Wine runtime environment that I
can think of is that in Windows we use the .NET 4.7 SDK and in Wine we use .NET
3.6.2. In Windows we most likely have a different set of fonts installed but I
am not sure that is relevant in this case since the OCR detection accuracy,
which is what seems to differ, should not depend on the installed fonts.

I assume that the OCR detection works worse in Wine for some reason and because
of that the background image does not get removed in the Wine result.

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