mdoc fails to run inside GitHub Actions

[dend]

Getting the following error:

Run D:\a\decksurf-sdk\decksurf-sdk\_mdoc\mdoc.exe update --debug --out _xml -fx frameworks.xml --use-docid
  D:\a\decksurf-sdk\decksurf-sdk\_mdoc\mdoc.exe update --debug --out _xml -fx frameworks.xml --use-docid
  shell: C:\Program Files\PowerShell\7\pwsh.EXE -command ". '{0}'"
mdoc 5.8.3
Opening frameworks file 'frameworks.xml'
Frameworks Configuration contains 1 assemblies
Creating frameworks cache: Caching net5.0\DeckSurf.SDK.dll
mdoc: Mono.Documentation.MDocAssemblyException: Error caching DeckSurf.SDK, Version=0.0.2.0, Culture=neutral, PublicKeyToken=null from net5.0\DeckSurf.SDK.dll ---> System.ArgumentException: String cannot be of zero length.
Parameter name: oldValue
   at System.String.ReplaceInternal(String oldValue, String newValue)
   at System.String.Replace(String oldValue, String newValue)
   at Mono.Documentation.Updater.Frameworks.FrameworkIndex.GetFrameworkNameFromPath(String rootpath, String assemblyPath)
   at Mono.Documentation.Updater.Frameworks.FrameworkIndex.StartProcessingAssembly(AssemblySet set, AssemblyDefinition assembly, IEnumerable`1 importers, String Id, String Version)
   at Mono.Documentation.MDocUpdater.Run(IEnumerable`1 args)
   --- End of inner exception stack trace ---
   at Mono.Documentation.MDocUpdater.Run(IEnumerable`1 args)
   at Mono.Documentation.MDoc.Main(String[] args)
See `mdoc help' for more information or use --debug to diagnose.
Error: Process completed with exit code 1.

See sample job (failed step) for the content. The step before that shows what the XML content is for the frameworks.xml.

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And if I change the path to .\frameworks.xml, I get mdoc to hang completely in the action:

Run D:\a\decksurf-sdk\decksurf-sdk\_mdoc\mdoc.exe update --debug --out _xml -fx .\frameworks.xml --use-docid
  D:\a\decksurf-sdk\decksurf-sdk\_mdoc\mdoc.exe update --debug --out _xml -fx .\frameworks.xml --use-docid
  shell: C:\Program Files\PowerShell\7\pwsh.EXE -command ". '{0}'"
mdoc 5.8.3
Opening frameworks file '.\frameworks.xml'
Frameworks Configuration contains 1 assemblies
Creating frameworks cache: Caching .\net5.0\DeckSurf.SDK.dll