So I was play the dimensional rift side quest, and this thing showed up the first time I entered the room.
I suppose its something happens in chapter 12 or anything, the dialogue happens when I tries to investigate the file on the desk.
Yet, the second time I enter the room (which is after Melia's investigation) and tried on the same spot, nothing showed up.
I guess it is a minor bug, does the map of the room and the map of whatever the dialogue happens overlap and the interaction is not deleted?