when a NPC sees you, it starts a conversation that leads into a battle
but right after the battle you get the exact same conversation, with in the end the message "It is too soon to battle this NPC again"
it happened to me 7 times in a row, I tried to conversate with the space bar and the mouse
both resulted in double talk
EDIT:
after a check it looks like it only happens when you START the conversation with space bar
continuing with space bar or with mouse clicks ends in double talk
if you start the conversation with 1 mouseclick, you can do the rest with both space bar and mouse clicks without the double talk
EDITION:
when you walk around the NPC and start the conversation yourself, you don't get the double talk
but right after the battle you get the exact same conversation, with in the end the message "It is too soon to battle this NPC again"
it happened to me 7 times in a row, I tried to conversate with the space bar and the mouse
both resulted in double talk
EDIT:
after a check it looks like it only happens when you START the conversation with space bar
continuing with space bar or with mouse clicks ends in double talk
if you start the conversation with 1 mouseclick, you can do the rest with both space bar and mouse clicks without the double talk
EDITION:
when you walk around the NPC and start the conversation yourself, you don't get the double talk