Kleos

THANK YOU! This worked for me, and only required the decouplers to be used. I didn't have to move the position of my landing legs to the command module. I will add a few more details from my own debug in case it is helpful to anyone else: - This only happened with the medium landing legs. If I put the small landing legs in the same spot, I would not get the fuel crossfeed bug. - This only occurred when I had boosters in the first stage that I dropped off. Steps would be 1.) Ignite boosters + medium engine at launch. 2.) Radially detach boosters with medium engine still burning. Once this happened the total fuel for my medium engine would jump from 7.7 tons to 8.5 tons (because at this point the crossfeed of my decoupler in the next stage failed and it combined this fuel tank with my first stage. If I launched the rocket without these boosters, then the crossfeed would hold even with the medium landing legs still on my lander. - I still had the same bug when I put the landing legs on a small strut connection instead of directly on the fuel tank. - The only thing that fixed it for me without drastically changing the purpose of my rocket was to attach the landing legs to some radial decouplers, and then only activate those decouplers in the stage after I was done using that engine (effectively the stage that I am dumping the lander engine anyways). My guess is that the bug only occurs when the medium landing legs are a part of the same stage as the engine in question that will have all of its fuel stolen with this bug.