On iPhone, starting around Oct 30 or 31, every game I start freezes as opponent does nothing but never ropes. Usually on the first turn but sometimes they get a couple of turns in. Once I realize it’s frozen I force close and rejoin, but my opponent is still frozen and roping after 15 seconds, so I just finish out the game. Occasionally the opponent resigns, indicating they probably also quit and rejoined eventually. I never get “your opponent left”, and have never had an opponent rejoin and play a turn. I’ve also never had a second disconnect in the game.
Newer information: Disconnect is triggered by playing “druid of the reef” or “druid of the storm” cards.