It was one of the tools that allowed me to maintain healthy credit card usage habits. In my idle time when messing around on my phone I’d gotten into the habit of just transferring money from my checking account to my credit card, often in excess of my actual balance, so as to cover “pending” purchases.
Not only will my bank no longer let me do that, just to twist the knife a bit, they will let me make multiple payments totaling the pending total due so long as no individual payment exceeds my actual balance.
So it’s not that they can no longer handle negative balances on the card, it’s just that they’ve half-ass made the interface disallow it.
Easy peasy. Instead of making payments to your credit card, transfer the amount to a high yield savings account instead. Then use that savings account to pay your CC once per month. (Savings accounts typically have a limit on debits, but you can usually make as many deposits as you want.)
Enjoy the cashback AND a few bucks in interest AND having your checking account accurately reflect your “real” money at all times.