Since the UI was modernised recently, my fallback topic has started triggering even when the Conversational Boosting Topic creates an answer using the Create generative answers step.
I can't say for sure if this is related to the recent changes, but I can't seem to figure out a way to stop it fallback Topic from triggering when the answer is created.
My guess is that it has something to do with the fact that both Topics are via 'On Unknown Intent' but changing the priority doesn't do anything. So I assume that I will need to set the Answer variable to something, though this was automatic beforehand.