3.5.6; Configuration > Network > Ethernet Port Disabled -NOT- Working

3.5.6; Force 200; 2.4Ghz and 5Ghz

On 06/01/19, I needed to disconnect some non-payers using Configuration > Network > Ethernet Port Disabled. I just found out today that half of these disconnects are still getting internet. The Home page shows "Ethernet Status Disabled", but the "Monitor > Network > Bridge Table" shows the MAC of the customer router (should not show up if ethernet port is truly disabled). Throughput page shows they are still enjoying Netflix, Hulu, some type of video on our dime. 

We use management and data vlans so I was able to stop internet access by putting a data vlan that does not exist on our network into these SM's. -BUT-, this is not how this is supposed to work. 

We are converting to Sonar, so this will not be a huge issue, but I am sure there will still be times we will need this function to work.