Donor civicrm/contact/view?reset=1&cid=46153568 has been in touch with DS about their name being incorrectly transposed to question marks
cids
15965100 Kanji text
46153568 Hiragana text
bad string looks like ???様
(the last bit is the 'san' that we have in our text)
@KHancock99 has investigated and found at least one other instance. I have turned jobs off to investigate