POE Not Working on Mikrotik HAP AC

I am running a Mikrotik HAP AC to a TP-LINK CPE210 running firmware 38-3faf42c on the Mikrotik and firmware 3.20.3.1 on the CPE210.  When I initially configured my setup at my kitchen table using 2 ft cat6 cables everything worked great.  I was able to communicate to the Mikrotik and it saw the node as a neighbor through port 5 on the Mikrotik (yes, I have POE passthrough turned on).

As soon as I put my node on my roof and ran ~50 ft of cat6 from port 5 of the Mikrotik to the node, I can't see the node as a neighbor.  The node is being powered on via the lights on the node, but it won't show up as a neighbor.

To ensure my cat6 cable was right I took the Mikrotik completely out of the loop and communicated to the node directly, through the POE switch that came with the node.  That worked fine.  I could communicate and see neighbors.

I added the Mikrotik back into the loop and turned off POE passthrough and ran from port 5 into the POE switch and then to the node and everything works fine, but if I turn POE passthrough back on and take the separate POE switch out, the Mikrotik can no longer communicate to the node.

Anyone ideas why the Mikrotik POE can power the node (lights turning on at the node), but can't communicate using POE passthrough enabled?

Editing to add a picture of the advanced configuration screen.  In this screen, POE passthrough off, I am able to connect from port 5 of the router, to the separate POE switch, to the node.  If I turn this on, then save, then reboot, and take the separate POE switch out, I am not able to communicate to the node, even though the node lights turn on.