Resetting the chapter got me past the glitch but...to inquire further:
Question for those of you who are stuck here, when it came to reliving the memories part which two did you do? I tried it originally with Aurene, then Vlast. I reset the the chapter like Tyrsa and Kos Luftar mentioned and it took me back to "Bottle your Emotions" when I said to continue chapter 18.
So, this time I chose Blish then Cinder, and I did not bug out this time around. I just turned in the boxes to Chul-Moo and am currently progressing past Emotional Release to the part in Arborstone. Maybe this is due to the fish you pick up from the Aurene quest also seem to be bugged? The Pyrite Dorado.
Just a thought, hope that helps.