When faced with UI as shitty as this, they could’ve (and in hindsight obviously should’ve) instituted a two step procedure where not just the principal gets put

When faced with UI as shitty as this, they could’ve (and in hindsight obviously should’ve) instituted a two step procedure where not just the principal gets put into an internal wash account, but the interest also goes to an internal account. Then the next day they can pay out from the interest only account. That way a mistake would be caught before the money leaves the bank. But hey, I don’t feel too sorry for them if they still haven’t figured out this whole banking thing after 208 years in the business.