The bot is usually added, to avoid the situation that the available player can't play.

I guess you try to avoid pairing with the bot, as long as there is more than one player in the arena.

However, a few times I saw a situation: There is one available player, and also there is another player, who is not online, but there is no "pause" sign near him. Finally, there is no new game created: there are two players, so the bot is not paired. But one of them is not online, so a game between two players is not created as well. So then the arena is stuck.

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Thanks for the comment, you are correct there are issues when we have low numbers of users and players not returning to the tournament after finishing a game. We hope to address this issue in 2024.