When looking at the network profile of user Valorum, I notice that they have 300k rep on SciFi.SE, but it doesn't show up on their accounts tab.
Even stranger, if you go to their profile on Literature.SE, the communities sidebar doesn't list SciFi and their profile on SciFi.SE doesn't list any other sites. Here are some photos because my English is lacking.
Sidebar of SciFi profile:
SideBar of Literature profile:
Why did this happen? Is it just me? Is this a bug? I don't think it's caching. The system had plenty of time.