When using gh-ost to migrate a table from latin1 to utf8mb3 (and likely other utf8) character encoding, the initial data copy works correctly, but new data inserted during the migration via binlog ...
Warning 3719 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous. Warning 3719 ...