Kerbal Space Program

Initially submitted as a forum thread here: https://forum.kerbalspaceprogram.com/index.php?/topic/199326-decoupledundocked-satellite-disappears-or-is-moved-to-a-pole-and-falls/#comment-3904026

It looks like this is very much related to #26971 bug reported earlier, however that report only refers to EVA constructed vehicles and the Windows version. It looks, however, that the regression is more severe and more general.

Can you attach either a craft file or saved game with the craft in question, please?

You don't need a specific save/craft (although I can/will supply it later today) - just decouple any crewless craft (Probodobodyne controller) and switch control to it.

Understood, and thank you. The problem is I cannot reproduce it here (so far) even using your craft. Not saying it didn't happen, clearly there is an issue. But I need to figure out why, so first I'll pass this onto another member of the team that has a Linux and see if this is happening on Linux only (it's happened before). Thank you for your patience

Feel free to let me know if there's anything else I can help with/supply. Ready & willing to give a hand. I have downgraded to 1.10 a.t.m. just to be able to continue to play the game, however, if you can give me a non-steam binary of 1.11 I can continue testing on Debian/Ubuntu distros.

This sounds very similar to #26971

I am experiencing the same issue and can provide additional detail. I built a dual orbital probe and landing probe separately, then using load craft with the merge option, I brought them both into the VAB. I re-rooted the added craft so that I could attach them together. When they are in orbit of their destination, I attempt to use staging to seperate them and activate the engines. When I detach the added probe from the original vessel, it appears to be exerting a force that pushes them together. The added craft shows the NAN in the console, and is unloaded when time warp is activated. The original craft shows the orbit constantly changing with the other craft pushing on it, even though no engines are firing, there is no RCS system, and no docking ports. If I destroy the FL-A5 at the bottom of the added craft (which is the same part I changed the root to when merging) the craft seems to get free, and be able to finally be pushed away from the parent craft. It seems like the 'Ease to ground' is activating when separating certain parts such as FL-A5 and SC-9001 through decoupling. The game physics considers these parts as "Under Acceleration" and the only way to get past the erros are to revert to a previous save and not play the game. I have experienced this with 3 seperate crafts I have built.