Simple map update changes labels in a map

1st case:

• we have default configuration data.
• open Configuration->Maps
• click "Local network"
• click "Save"
  sysmaps_elements.label changes from " {HOST.NAME}\r\n{HOST.CONN}" to "{HOST.NAME}

  \n

  {HOST.CONN}

  "

2nd case:

• we have default configuration data.
• open Configuration->Maps
• click "Local network"
• click on icon "Zabbix server"
• click "Apply"
• click "Save"
  sysmaps_elements.label remains without changes