Thanks for reporting it. We were able to reproduce it and will fix it asap. Sorry about that... we tested English and Russian and we thought spanish would work just fine. Our bad! (Perdón por el bug. Lo testeamos en inglés y ruso y pensamos que español funcionaría igual. Lo arreglaremos lo antes posible.)Playing with the selected Spanish language, After leaving the party, the language automatically changes to Russian.
Congratulations for the game.