I was playing a Solo League vs AI on my PC. It was the 3rd round of a knockout competition and I filled the morgue with skaven bodies
I rapidly pressed Esc to get past the celebrations and to the rewards screen, but instead it loaded me into the "Play in a League" menu as if nothing happened. I was back at the 3rd round of the competition facing the same Skaven team.
Thanks for the awesome game. I love/hate it and I'll keep looking for more bugs.