I'm not too sure about the Research name that start's this (Tec Rebels), but here's what's happening:

Played another grand game of Rebellion today after managing to overcome to constant Superweapon Bombardment and found something that annoyed the hell out of me, about 1/2 through the game i started researching into the Diplomacy tech tree with the Tec Rebels, i researched something unique to the Tec Rebels that forces Pirates to provide you with ships everytime the Pirates raids were over.

Now. Oh my, i can't set-up my own fleet due to this, i'm not sure if i can turn it off, i haven't yet seen anyway too but after investing into Fleet Cap to gain a large fleet, this research started warping in Pirates to any (completely random) Planets owned by myself. Now, this is soooo annoying when you're trying to build a fleet how you want, the Pirates warp in around 50-60 ships taking up a fair bit of Fleet Cap.

From what i'v seen, i can't turn this off, i can't wipe the Pirates out due to the Rebel Alliance research so that's thrown out the window, but yes. If i want to start building a fleet that i choose, i have to suicide the Pirates constantly into enemy terrotory which is rather irritating when they warp into your back Planets which requires 5-6 jumps to get into combat.

I don't know if this is a bug or just a design flaw with this certain research but i do recommend they add the ability to call in Pirates manually and not everytime a raid ends. It's ruddy awful.

- I'll add this to this topic also, it's another Bug i'v found -

The Colony Ship does not Auto Colonize Planets upon entering a GravityWell, they just sit on the edge of the system even when the Auto Colonize ability has been enabled.

Thanks for reading.