If you talk to an NPC and click next, then click back and then next again, the next window will not show up and you will disconnect. This happens with NLC taxi, Spinel, Cody, spiegelman (2nd option), Pason (3rd option), Phil This doesn't seem to happen when accepting quests. I tested this with the NPCs Teo and Manji with the quest 'Maya and the Weird Medicine' and the NPC Blackbull with the quest 'Building a New House For Blackbull'
