Steps to reproduce:

1. curl --insecure -sS -H "Content-Type: application/json-rpc "  -d ' {   "auth": "TOKEN",   "id": 1,   "jsonrpc": "2.0",   "method": "template.get",   "params": [] }

   ' http://192.168.1.17/api_jsonrpc.php.

2. wil return
    [ .... {     "proxyid": "0",     "host": "Website by Browser",     "status": "3",     "ipmi_authtype": "-1",     "ipmi_privilege": "2",     "ipmi_username": "",     "ipmi_password": "",     "maintenanceid": "0",     "maintenance_status": "0",     "maintenance_type": "0",     "maintenance_from": "0",     "name": "Website by Browser",     "flags": "0",     "templateid": "10628",     "description": "The template to monitor a website's availability and performance on the website by Browser.\r\n\r\nZabbix server uses a web browser to perform navigation and collect performance metrics.\r\n\r\nGenerated by official Zabbix template tool \"Templator\"",     "tls_connect": "1",     "tls_accept": "1",     "tls_issuer": "",     "tls_subject": "",     "tls_psk_identity": "",     "tls_psk": "",     "custom_interfaces": "0",     "uuid": "2526dce71d714e31bd545e96370c67b2",     "vendor_name": "Zabbix",     "vendor_version": "7.0-0",     "proxy_groupid": "0",     "monitored_by": "0"   }

   ]

3. plenty of columns not belonging to the template (owned by the host object)

Expected:
just the columns belonging to a template