Not sure why, but several times when watching a recording on Tablo 4th generation the Ethernet connected Firestick has dropped its wired connection and switched to WiFi.
I have seen this happen on two different TVs with Firesticks. I have never seen this happen with any other streaming app.
When this happens, I have to restart the Firestick to get my wired connection back. Usually I have to unplug the Firestick to restart it, the software restart hangs up.
This has not happened often but is it very annoying. I can tell when it happens because I start to get buffering
As long as the Firestick stays connected to Ethernet, everything works great.