It seems I faced with the same issue for MySQL database. I tried to create database with utf8_bin, utf8_general_ci, cp1251_general_ci, but when I save fields with Cyrillic chars, all of them are replacing by question marks ("?????"). In case H2 database, everthing is OK.
Could you please advice how to fix this issue?
MariaDB 10.5.8 InnoDB
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