First I did two substitutions (and they were executed normally) and prepared a third. But the player I wanted to substitute out of the match got a red card before the substitution happened. Result: nothing happened, the player who got red was send out of the match but the player which I planned to bring didn't enter the match (but was visible in the setup).
It's correct that the player who got red was send out and the player didn't come in, but I couldn't make an alternative substitution anymore. This bug needs a fix. It should be possible to make a different substitution in this situation.