since the 16th June maintenance, some npcs (f.ex. the barhan gateway node manager) have their exclamation marks reset back, indication i have not talked to the npc to get their knowledge (even though i have the knowledge ofc and had it for years) it's driving my OCD crazy. please fix this, i can't remove the exclamation mark by talking to the npc.
i've opened a bug report too.
Node managers seem to not have this anymore but some NPCs in towns, particularily newer NPCs, still has this issue.