run adata.uns['SPECTRA_overlap'].index, and there are some factors without name?

[Joyjoyjoyc]

Hi, everyone!
As I follow the tutorial of spectra to fit model without cell type annotations after 10000 epochs, and run adata.uns['SPECTRA_overlap'].index, I got some factor without name as follow. I want to know why? Thanks!

[Joyjoyjoyc]

And there are also some duplicate factor names, like the factor 81 and factor 87 are both pentose-phosphate-pathway, but the umap plot looks quite different.