[0.6.12 public build] Etheryn is permanently stuck in the party and trying to change the party basically kills the game

[Rol_Dra]

After completing the Ruins of Xadaron quest, Etheryn gets stuck in the party and trying to change the party from a location where a Waystone is present results in a violent error. As stated, I'm using version 0.6.12, public build. If there's any extra info that could be useful, I'm happy to provide it.