Item name "mpTenured" has been fixed to be "mp Tenured" in Template JMX Generic.
In order to fix it, import this template from https://www.zabbix.org/wiki/Zabbix_Templates/Official_Templates.
Java gateway now uses Android JSON library instead of JSON.org library. When upgrading, apart from the gateway itself, it is necessary to replace the JSON library file and update
startup.sh script. See Java gateway file overview for details.