...and if the blocks did happened to be misread in a way that deceived the autocorrection, it would be an entirely different string and not something fixable on

...and if the blocks did happened to be misread in a way that deceived the autocorrection, it would be an entirely different string and not something fixable on string level. Single char differences in qr code input tend to be huge. This can only be explained by the QR result getting passed through a pipeline intended for OCR results. An almost depressingly boring explanation. It kind of seems like something that would likely happen in big organisations from disconnect between those deciding and those with their fingers in the code, but it could also happen to a solo.