I've also encountered this bug unfortunately when I went for Astarion (I play f!elf) - the voice lines were fine and I was able to continue to the next day, but I have seen glimpses of the Astarion cutscene and was a little dismayed to be missing out. On the bright side, it seems like Larian is pretty responsive to feedback and very fast at churning out hotfixes so the romance cutscenes'll likely be back before the new year. I've submitted an official ticket on their site as well. Fingers crossed : )
