Facetious and joking comments from others aside - yes, this is definitely an unintended bug, without any sane question of the matter; it's breaking scripts and cutscenes.
I'd encourage you to send this one, along with your save file (folder and thumbnail included) along with any screenshots you might have, along to their formal bug submission form - here:
https://larian.com/support/baldur-s-gate-3#modal
