Same issue as well.  Works randomly.

I've got the same issue.  Strange shopify hasn't fixed this bug yet.

That’s not true about next day rates. Of course they come up for an address a mile away. Anyways, I’m waiting for support to get back to me. It was a struggle to get it escalated because the support agent could not comprehend the issue. Very frustrat...

I'm having a problem with the "shop promise" badge showing up on carrier calculated rates and giving wrong delivery dates.  For example, it shows up as it should on my standard free shipping (which I want) but it also shows up next to UPS Next Day de...

Anyone ever find a fix for this?  Really annoying.