Unable to download alternative sizes of screen within <picture> tag

[MitsuPa]

If use the --remove-alternative-images option, the <source> tag and <img> tag of the exported html file are the same image.
Not all pictures are saved.

<picture>
    <source media="(min-width: 835px)"
        srcset="https://images.pexels.com/photos/1108099/pexels-photo-1108099.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=1">
    <img src="https://images.pexels.com/photos/45201/kitty-cat-kitten-pet-45201.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=1"
        alt="Cat" style="width:auto;">
</picture>

Please check this, Thanks!