That's funny, because lately I've encountered bizzare behavior that contradicts the AI supposedly shooting at stuff with weapons that have the 'Huge' flag. Recently, I've found that the AI will completely refuse to fire Terran Huge Turrets that I've given the 'Huge' flag at anything that isn't a destroyer or a corvette. So far I've seen this on all builds I have. I'm going to use a debug build and experiment with it further.
Also, the damage scaling isn't a bug? Hmm, that's interesting, but I've definitely encountered with fighters on older builds, like 3.6.12. I don't seem to be getting it on the BP builds or 3.6.18, but I'm not so sure.
This is really funny. After I mess around in the debug builds and make sure I record everything I run into, I'm going to share it so you guys can see what happened/happens. It seems that some people are running into scenarios where flags don't work properly.