Having the exact same issue as well. I’m pretty sure it’s only with UPS. Also I’ve noticed that when printing ups labels on 4x6 thermal, the labels are not centered and there’s white space on the top and left sides. It’s really annoying because parts and get cut off. I don’t have this problem with usps labels.
Side note: has anyone else recent been having issues with USPS packages getting stuck in Kansas City, Kansas distribution center for days on end?