Multiconnect in CSS files

Good morning!

 

 

I have a problem with the multiconnect feature.

 

 

We're testing a new application with a standard level 2 delivery policy. It seems that the images referenced in a stylesheet are no "multiconnected" the x-pvInfo header is present.

 

 

I've attached two screenshots. The same rule is applied, same type of content (gif image)...

 

 

Is this normal?

 

 

Thanks