Scatter plot fails for a single point

[machur]

Scatter plot fails for a single point. A work-around is to pass list with the same point twice, but it looks like there's an error with one-element arrays:

Code that fails:

    plt.scatter([0.5, 0.3, 0.2], [0.2, 0.3, 0.5], s=10, color="red")
    plt.scatter([0.4], [0.4], s=10, color="blue")

Erroneous result:

Hackish way of plotting:

    plt.scatter([0.5, 0.3, 0.2], [0.2, 0.3, 0.5], s=10, color="red")
    plt.scatter([0.4, 0.4], [0.4, 0.4], s=10, color="blue")  # doubled point

Result as expected:

[JasonGross]

This is presumably caused by https://github.com/nschloe/tikzplotlib/blob/450712b4014799ec5f151f234df84335c90f4b9d/src/tikzplotlib/_path.py#L232 being a bad proxy for "is it a contour"