Steps to reproduce:

1. Take MySQL template from repo https://git.zabbix.com/projects/ZBX/repos/zabbix/browse/templates/db/mysql_agent?at=refs%2Fheads%2Frelease%2F5.0
2. Import into Zabbix 6.0

Result:
The formula in "Calculated value of innodb_log_file_size" item became (last(//mysql.innodb_os_log_written) - last(//mysql.innodb_os_log_written)) / {$MYSQL.INNODB_LOG_FILES}

Expected:
(last(//mysql.innodb_os_log_written) - last(//mysql.innodb_os_log_written, #1:now-1h)) / {$MYSQL.INNODB_LOG_FILES}