It doesn't look like there's any space character in that string.
Hexadecimal "53002E004D00610063006B00" converts into "S.Mack", and you said earlier that you see that data in the PSA as "S MACK", so it should be either because the dot or lowercase characters are not allowed in your prod environment. I would compare the related objects and configuration between your 2 environments because if the data record is the same, then there has to be some differences in your systems.