On ACX7509 Platforms running Junos Evovled release, when configuring a physical port as ingress in a port analyzer, the logical Interface Reports Double Packet Count Compared to Physical Interface. It is a cosmetic issue and does not impact the traffic.  

We can see the traffic statistics in >show interface <logical_interface> 

The solution of this issue is not to configure interface as ingress port in a port-analyser or upgrade to the fixed version reported in the following PR:

https://prsearch.juniper.net/problemreport/PR1872294