I've seen some posts about this here and elsewhere,
https://forums.larian.com/ubbthreads.php?ubb=showflat&Number=957163#Post957163It doesn't seem to just be a Patch 8 thing, since some of the threads I've found elsewhere are a year old. For the few that found solutions, it seems to be about mods. But the only specific one I saw mentioned as potentially causing it was 5e spells, but I did update that yesterday. I still am getting the bug on the nautilus at the beginning. I'll start further troubleshooting by double checking that all of my mods are updated that aren't purely cosmetic, but I'm wondering if there is something more definitive and known about what causes this, how to avoid it, how to fix it.
