Just wiped the config and tried all over.
Still the same.
The Automation selects the right port-profile, but the trunk port-profile only allows traffic on its native vlan, all other vlans are blocked somehow.
And again, the fun thing is that the mac-address table of the switch actually tells you that there is a client in the (in this case) tagged vlan 10 on that port, but no traffic.
A packet capture on that Automated port, actually captures incomming packets tagged with the VLAN , but there is never any reply from the network.
*sigh*