Tournament game starts even when I am playing another game

1. I entered to lishogi.org/tournament/vrqAQIKB
2. I started to lishogi.org/fXLdkMxE0aqe
3. lishogi.org/alxsA4e2 is started during when I am playing lishogi.org/fXLdkMxE0aqe

Is this an intentional behavaior?

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