Here's an interesting bug. Equip a ship with psi-blasters, and with a high Psi-skilled pilot, and intercept a hyperwave anomaly

If you hit the Tug with your psi-blaster, it goes mental, and jumps to hyperdrive, without the cargo . Then psi-blast the freighter, and it also goes mad and instantly jumps to hyperspace. It says mission failed, but kill the rest of the escorts, and you actually win.

Anyway, now when you go back out to the tactical-scape, the hyperwave anomaly is still there, attack it again, and the tug has a NEW container. This will repeat as long as you send the tug into hyperspace each time.