For a couple of hours, I thought Citibank Singapore's website was down.
If one tries accessing citibank.com.sg, there's no redirect to the www. subdomain. (That's still the case, if anyone wants to try.)
If Chrome didn't hide the www., I would have been able to tell from Chrome's search/address bar that the various banking services that I've been accessing were all on the www. subdomain.
While that is shoddy implementation on Citibank's part, hiding the www. most definitely didn't help with the troubleshooting process.