Rank_genes_groups -> does not return Axes

[dansteiert]

Please make sure these conditions are met

• [X] I have checked that this issue has not already been reported.
• [X] I have confirmed this bug exists on the latest version of scanpy.
• [X] (optional) I have confirmed this bug exists on the main branch of scanpy.

What happened?

Function Rank_genes_groups() does not return a figure -> returns None type Cannot get Figure via plt.gcf(), plt.gca().

Potential Fix: https://github.com/scverse/scanpy/blob/main/src/scanpy/plotting/_tools/init.py Line 485: cann be extended to the following as in other functions below:

    savefig_or_show(f"{key}_", show=show, save=save)
    show = settings.autoshow if show is None else show
    if show:
        return None
    return ax

Minimal code sample

fig = sc.pl.rank_genes_groups(adata, show=False)
type(fig)
#NoneType
plt.gca() -> empty axes
plt.gcf() -> empty figure

Error output

No response

Versions

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anndata     0.10.8
scanpy      1.10.2
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