I'm trying to add a custom field (single image) to a woo commerce product attribute. Unfortunately it does not shop up in the UI. ...it works for other custom taxonomies (...what's the difference?)
The product attribute is not a taxonomy, it works like a settings page in the admin area. The (default) taxonomies of WooCommerce product are Color (pa_color) and Size (pa_size). Please check these screenshots https://imgur.com/a/gaWjMHP
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