Board Game Arena

Could it be that something has changed? Until now, my opponent's board was always shown under my own board. Now it isn't displayed automatically anymore, but only after clicking the magnifying glass.

It's a little goofy - agreed.

The board below your board shows the board of the active player (could be you or any other opponent at the time).
The board below and to the right of your board show the board of the player selected by pushing the player magnifying glass (this is how you cycle through looking at you opponent's boards)

To avoid confusion, I totally ignore the board below my board (it's dynamic, and confusing who it represents), and I just select the magnifying glass of the opponent I'm interested in. Which, in reality, is just to check to see if anyone is beating me to the top of the climbing wall.