Incorrect information in file: ... #sql-alter ... .frm on ALTER

SET @@character_set_server=1;

DROP DATABASE test;

CREATE DATABASE test;

USE test;

CREATE TABLE t (c1 BLOB);

ALTER TABLE t ADD c CHAR(30) CHARACTER SET latin1 DEFAULT CONCAT ('ß');

10.8.0-opt>ALTER TABLE t ADD c CHAR(30) CHARACTER SET latin1 DEFAULT CONCAT ('ß');

ERROR 1918 (22007): Encountered illegal value 'ß' when converting to big5

2022-01-28 18:58:28 0 [Note] /test/MD190122-mariadb-10.8.0-linux-x86_64-opt/bin/mysqld: ready for connections.

Version: '10.8.0-MariaDB'  socket: '/test/MD190122-mariadb-10.8.0-linux-x86_64-opt/socket.sock'  port: 37496  MariaDB Server

2022-01-28 18:58:28 4 [ERROR] mysqld: Incorrect information in file: './test/#sql-alter-1711b9-4.frm'

2022-01-28 18:58:17 0 [Note] /test/MD190122-mariadb-10.8.0-linux-x86_64-dbg/bin/mysqld: ready for connections.

Version: '10.8.0-MariaDB-debug'  socket: '/test/MD190122-mariadb-10.8.0-linux-x86_64-dbg/socket.sock'  port: 30035  MariaDB Server

2022-01-28 18:58:18 4 [ERROR] mysqld: Incorrect information in file: './test/#sql-alter-16f8fb-4.frm'