My Area51 account is not currently showing up on my accounts list here (nor on English.SE). I noticed this Friday afternoon here (but not on English.SE) and figured it was a passing glitch, but apparently not. As you can see if you look at my Area51 account, it's not that the accounts have somehow become disassociated; Area51 knows about all of my accounts.
My rep on Area51 is currently 376, so it should be showing up between these two on my list:
I just noticed that my accounts page says it's listing 12 accounts but only lists 11, so it appears that other accounts know about Area51 but aren't displaying it.
Is this a bug? A transient, two-day glitch?