crane: Cannot Append Windows Layer Without Duplicate "Files"

[ltsar-federated]

Describe the bug

When using crane append to append a TAR'd Windows layer to a base image, the resultant image fails crane validate with an error:
Error: validating layers: duplicate file path: Files

I understand that the Files path is a special entry for windows layers, but I'm not sure why this is occurring. There is no documentation anywhere about this issue but according to the docs for crane append this should "just work" on windows.

The layer I am appending is a built .NET Framework 4.8.1 MVC App onto the image mcr.microsoft.com/dotnet/framework/aspnet:4.8.1-windowsservercore-ltsc2022

To Reproduce

Use crane append to append a windows directory onto an existing windows image using a windows x64 host machine.

Expected behavior

I expected the files from the TAR'd layer to be appended successfully to the base image, and the resultant image be runnable.

Additional context

Running on a windows image builder for github actions.

• Output of crane version
0.19.1
• Registry used (e.g., GCR, ECR, Quay)
  ECR