What gameplay feature is this bug affecting?
Retired king

What's the issue? Please include any error messages you receive and as much detail as possible.
After I retired my king, Восходящее Солнце and send him to dynasty, his name is broke and became Восходящее Солн�, and when I trying to see his kids, Lioden wrote that he haven't kids (he clearly have kids)

Any links relating to this bug? For example, if a particular lion is bugging, what is the link to that lion?
King, whose name and cub list broken https://www.lioden.com/dynasty.php?id=263331
His daughter (need to see that he have kids) https://www.lioden.com/lion.php?id=794222883878

Any screenshots you can provide us with?
Before retiring
https://ibb.co/myZHyYQ
https://ibb.co/r2mvwW5
After retiring
https://ibb.co/sQN90Bt
Cubs list
https://ibb.co/619gzbd
His daughter family
https://ibb.co/bQtmQZ2

Please provide us with step by step explanation how this bug happened so we can attempt to replicate it. If it's complex, please include screenshots where possible:
I just retired my king, Восходящее Солнце, after retiring he became grandpaw and he still have normal name (but I'm not sure about cub list because of I don't look at it). But after I sent him to dynasty his name is broken, last two letters replaced by "?" and his cubs list now don't show his cubs. I checked him from my phone (android, used Yandex Browser) and aipad (used Safari Browser) and from VPN (Nederland VPN, if I remember well), but problem still here