During a game, the dots at the top left of a player’s icon showing whether a player is online (or in the room?) are no longer lighting up green the way they used to.
Uhm, last night, when I was on the page for a corr. game I’m playing, it seemed to work …
(I think it lights up when the opponent comes to the specific game page, while they’re green in the “Friends” list if they are online anywhere on the game server.)