This is what I just sent to Tablo Support:
I unplugged the network cable from the Fire TV 2 and connected via Wifi. The problems went away. I was able to connect easily and my recordings loaded and fast forwarding and rewinding worked correctly with thumbnails. So this is good.
I plugged the network cable back in to the Fire TV 2 and I have no problems connecting. But the problems with fast forward and rewinding and missing thumbnails is present again. This is bad.
I don’t want to be on Wifi, I want to be hardwired.
So Amazon broke something. As a certified app developer for the Fire TV’s, will you be reaching out directly to Amazon on this matter? I see that more people are starting to experience this as their Fire TV’s get the update.