I’m creating a coupon with brand restrictions, and when I save the coupon, the brands are not included and this field is clear without information.
I use “Perfect Brands for WooCommerce” plugin and all plugins are updated.
This is a bug in the ‘Perfect Brands for WooCommerce’-plugin. One of their latest updates added ‘sanitize_text_field’ but they use it wrong on an array. Please contact the author.