Took me a while to download ... Act 2, Shadowheart as Avatar, Gale, respeced Karlach, respeced and Magic Mirrored Zenith Firesale. No mods. I loaded the save, ambushed the Dyder&Friends for the foul-mouthed lantern. No issues. But I admit that this was 5 minutes of play ...
I am not a very observant player, but it seems that my Shadowheart gained an "avatar" tag in her portrait.
I updated the nVidia graphics driver just before updating BG3.
