Since ever I don't understand what the Zabbix Proxy Template tries to tell me. I have especially problems with two values, but not limited to:

Values processed by Zabbix proxy per second
zabbix[wcache,values]

Zabbix queue over 10m
zabbix[queue,10m]

I'm convinced, that these values never show the value from the proxy, but always from the server, which makes no sense for me. I have attached two screenshots which should show my problem.

I replaced all Zabbix Server and Zabbix Proxy Templates with a freshly exported version from the Zabbix 3.2.5 Appliance.
Then I cleared our Proxy and Server Templates and linked the new ones.

The values on the left are the real vps from the proxys.
The values on the right are what "zabbix[wcache,values]" shows for the proxy. And this value ~600vps is the value of the server.

The same is with "zabbix[queue,10m]". All Proxys always show the same value, but in the Frontend Dashboard "Overview by proxy" I can see the real values.

Am I'm just doing something really wrong, or is this a bug?