I've got the stock "Steam" version of the game, no mods.
Let's say i wanted to create the Dragon/SpaceX system. Launch with a payload, separate from the launch vehicle, then do something intelligent with both halves, like return to a safe landing, dock with another vehicle, etc.
I've created rockets with an orbital payload, where there is a "drone" on each half of the vehicle, as well as batteries, fuel, and actuators.
however, despite my best efforts, the entire vehicle powers itself off the satellite's batteries, and the rocket becomes debris immediately after separation, despite having electrical power and fuel onboard.
What am I doing wrong?