Facing an absurd issue. USER A is aligned with role A. USER B is aligned with role B. Role A is at higher level than Role B. OWD settings for a custom object Test_c is Private. Through manual sharing i am sharing the record of Test__c object to USER B. 'Grant access using hierarchy' checkbox is also checked. But then also to USER A, the record shared to USER B(through System Admin) is not visible. What could be the reason?