Originally Posted by
gr2020
The theory I've seen is that there's a restaurant named "Este" on the list and Chase changed their recognition thing to credit if "Este" appears within the charge (wESTErn bagel, ESTEreo). This would also explain why Nobu restaurants not on the list are getting the credit. I wouldn't eat somewhere relying on this, though, as if this is the reason, it could be fixed at any time.