New Around Here
Updated/Solved - The issue was Apples Private MAC needed to be disabled. The MAC Filter setting is working correctly... my bad.
BUG 386.2.6 - RT-AX58U (MAC Filter Mode)
This occurs for me when "Smart Connect Mode" is enabled or disabled. When using Wireless MAC Filter Mode "Accept" it is doing the opposite and rejecting clients. When using Wireless MAC Filter Mode "Reject" it is doing the opposite and accepting clients.