Dooms ships in Inner Core system?

I've mentioned them in my story
BTW, gunboats ignore the player, fighters will try to attack you though. They just cruise to their waypoints. I suppose they are used as cargo carriers to transport various goods for Great Doms' war machine between their stations.

Quote from Ajay

BTW, gunboats ignore the player, fighters will try to attack you though.

My observation is that Wings with (at least) one GB in them ignore you completely, until the GB gets out of cruise by itself (e.g. at a gate). Only then the fighters of that wing start to attack.
When you CD the GB on it's way, you can shoot the fighters without reaction, they just try to cruise again. At least that was the case when I last visited IC. Can someone confirm that behaviour?
It's already mentioned here: Alien-Wings with Gunboats ignore player

bug report

Thought it wasn't a bug but a feature xD