Dataset.publication_owner can return unexpected value

[hagenw]

For most datasets I have tested audbcards.Dataset.publication_owner it works as expected.

But for crema-d it behaves strange:

>>> import audbackend
>>> audbackend.__version__
'2.0.1'
>>> backend = audbackend.backend.Artifactory('https://audeering.jfrog.io/artifactory', 'data-public')
>>> maven = audbackend.interface.Maven(backend)
>>> # Expected owner
>>> with backend:
...     print(maven.owner("/crema-d/db.yaml", "1.3.0"))
audeering
>>> import audeer
>>> cache_root = audeer.path("cache")
>>> audeer.rmdir(cache_root)
>>> _ = audeer.mkdir(cache_root)
>>> import audbcards
>>> audbcards.__version__
'0.2.0'
>>> ds = audbcards.Dataset("crema-d", "1.3.0", cache_root=cache_root)
>>> ds.publication_owner
'_system_'

Even though the code executed by audbcards.Dataset.publication_owner is identical to what I did above using audbackend:

audbcards/audbcards/core/dataset.py

Lines 286 to 291 in 75e27c5

	@functools.cached_property
	def publication_owner(self) -> str:
	r"""User who uploaded dataset to repository."""
	with self.backend.backend:
	path = self.backend.join("/", self.name, "db.yaml")
	return self.backend.owner(path, self.version)

/cc @ChristianGeng

[hagenw]

The issue exists only for our public repository, not for our internal repositories.