Good day. There is one small bug with the encoding of some Russian characters, namely with the letters "c", "I" (so far only they were noticed).
The fact is that when registering, the user specifies the first and last name, these parameters are transmitted via ajax to the java servlet that writes these data to the database, and the result is such krakozyabry: Pet ? Ivanov
Encoding everywhere (when sending a request to the contenttype, in the meta tag of the html page) is utf-8. I can not understand the reason.