So I was going through a full corruption run of chaos rising, normal difficulty and got to the rescue scouts mission on calderis. Mission went fine until the ending cutscene triggered. Diomedes jumped in ran towards the sorcerer and bounced away. The cutscene tried to continue and went most of the way through until it became stuck on diomedes repeatedly teleporting away from the sorcerer. Thadedus and a scout squad were also randomly select-able at this point.
I have no mods installed.