Heist quests character voiceacting cuts out at the end

Some english voiceacting for NPCs in Rogue Harbor cuts out about 10 seconds before the end, when you talk to them. for example Vindiri's talk before you embark on the "the grocery list" quest.It's not the only one but it's the only one i took a note about it.

it's a very big shame, the storylines and characters are so good. and potentially it's an easy fix.

edit: upon a second inspection it looks like th dialogue it's ending because using my mouse wheel i scrolled down a little at the start of the dialogue to read ahead and the dialogue stops when the text reaches its end, rather than the voicelines.Can you tweak the behaviour so that it can't close automatically before the voiceacting is over?