Hi, here’s my problem and settings.
Groups: X, Y, Z.
Categories: A, B, C, Csub1, Csub2, Csub3.
Group X is assigned to all of those categories (thus not restricted).
When products assigned to categories A, Csub1 and Csub2 are available to group X, the customer can no longer see those products in any of the categories. (I don’t believe this was the case when I set these things up 2 years ago).
If same product is limited to categories A and Csub1 (removing the second subcategory), then the customer can see the product in either category.
My Group Options settings for Post Types are: Media, Page, Post, Product.
My Groups Restrict Categories settings for Taxonomies are: both category and product category.
Groups Restrict Categories 2.1.2
WooCommerce Version 3.8.0