"Cancel the current NPC speech when new text is available or text is advanced" setting isn't being honored by Kokoro voice backend

It may be happening with more than just the Kokoro voice backend, but the the "Cancel the current NPC speech when new text is available or text is advanced" setting, I have set to disabled, and yet when I advance NPC speech and there is more NPC speech after that, then it cancels the previous NPC speech and starts the new current NPC speech.

I want it to queue up all the TTS to play in sequence, useful for speeding through the less interesting interactions so that I can listen to it while I'm on the way to progress the quest.