A FlyerTalk Posting Legend
Join Date: Sep 2002
Location: LAX/TPE
Programs: United 1K, JAL Sapphire, SPG Lifetime Platinum, National Executive Elite, Hertz PC, Avis PC
Posts: 47,221
In this case it's the lunch-hour OAK-IAH flight, so it's highly unlikely there are any connecting passengers.
I'd like to see the bug fixed, or at least understand if there is a fixed time to wait once the 24 mark is reached before trying to check-in.