Reading with ad.io.read_h5ad gives back csr_matrix even when saved with csr_array

[alam-shahul]

Please make sure these conditions are met

• I have checked that this issue has not already been reported.
• I have confirmed this bug exists on the latest version of anndata.
• (optional) I have confirmed this bug exists on the master branch of anndata.

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Code:

import anndata as ad
import numpy as np
from scipy.sparse import csr_array

data = ad.AnnData(
    X=np.arange(10).reshape((5, 2)),
    obsp={
        'adjacency_matrix': csr_array(np.eye(5))
    }
)

data.write_h5ad('test_dataset.h5ad')

data = ad.io.read_h5ad('test_dataset.h5ad')

print(data.obsp['adjacency_matrix'])

Traceback:

Versions

0.11.3

[alam-shahul]

Is this supposed to be the case?