Same Issue. Sideboarded twice and both times it was the same after I got disconnected in game 1. I tried to login again during sideboarding before game 2 and nothing helped. It showed a 50 second countdown clock and no maindeck. I could see the sideboard cards and click them, but I was not able to submit with any deck configuration. When I changed deck views, my companion showed as a card type "Commander".
Same Issue. Sideboarded twice and both times it was the same after I got disconnected in game 1. I tried to login again during sideboarding before game 2 and nothing helped. It showed a 50 second countdown clock and no maindeck. I could see the sideboard cards and click them, but I was not able to submit with any deck configuration. When I changed deck views, my companion showed as a card type "Commander".