Amasty's Customer Group Catalog | v2.1.3

You have TEST-product and Categories A & B. Also 2 groups. GroupA & GroupB. - GroupA users can see products from categoryA and navigate to that category. They can not navigate to categoryB. - GroupB users can see products from categoryB and navigate to that category. They can not navigate to categoryA. - If TEST-product is assigned to categoryA, GroupA users can see it. GroupB users can not. [Correct] - If TEST-product is assigned to categoryB, GroupB users can see it. GroupA users can not. [Correct] - If TEST-product is assigned to categoryA & categoryB, neither GroupA or GroupB users can see it. [Wrong. They both should be able to see it. GroupA users will see it in search results and while navigating to CategoryA. GroupB users will also see it in search results and while navigating to CategoryB.]