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Game Version v2026.8.5.5168 Operating System Windows 11 What Happened After decoupling the capsule, the remaining rocket continues to fire liquid engines as expected, and appears uncontrollable (as expected), but you can shut down the engine with the "X" key, but not the Shutdown button What...

Game Version v2026.8.5.5168 Operating System Windows 11 What Happened After crashing a ship on the surface, the camera remains at the crash site. Zooming in and out causes the surface to deform, or possibly show obvious LOD effects. What Was Expected I expected the surface to not deform, like...

Game Version setup_ksa_v2026.7.10.5056 Operating System Windows 11 What Happened Using the docking camera shows it's offset, and sometimes partially blocked by the docking ring. What Was Expected I expected the docking camera to be centered. Reproduction Steps Undock / decouple the ship in...

Game Version 2026.7.9.5018 Windows 11 What Happened Nose to nose docked craft do not respect new direction of "active" capsule or engine. This means if you do an Apollo style mission, and attempt to fire retrograde with the CSM engine for Lunar orbital insertion, it will instead face...

Game Version 2026.7.9.5018 Operating System Windows 11 What Happened Docking port petals cilp into each other. What Was Expected I expected the ports to be 120° offset from each other, so the docking petals do not clip Reproduction Steps Dock two craft together Reproduction Rate Always...

Game Version 2026.7.9.5018 Operating System Win11 What Happened Activating the docking camera on not-in focus craft makes HUD disappear. It comes back if you change ships. Sometimes, the camera view shows up, sometimes not. What Was Expected I expected the HUD to not disappear. Reproduction...

Game Version v2026.6.8.4680 Operating System Windows 11 What Happened When docking a craft that was previously separated to two parts, the redocked craft isn't docking at the docking port, but at some offset point. This either leads to a merged craft, or one separated, yet acting as a single...

It's probably a bit out of date already, but I figure it should get people started.

Took a few weeks to finally build the Caturn V to land kittens on the Moon in the Kitten Space Agency pre-alpha. I even got most of them back safely! I used the more realistic L91 engines, as the debug engine would have made it too easy. Without the larger diameter fuel tanks, this vehicle...

Game Version v2026.5.11.4462 Operating System Windows 11 What Happened After undocking a nose to nose docked craft, one of the craft faces the opposite direction of expected when "SAS" / autopilot is set. For example, setting to Up, points Down, and Program points Retrograde. What Was...

Game Version ksa_v2026.5.11.4462 Operating System Windows 11 What Happened While building a many part craft, placing additional fuel tanks get automatically scaled to randomly large sizes along the X and Y axis, but not Z axis. The bug transfers through the vehicle when launched. What Was...

Game Version v4424 Operating System Windows 11 What Happened Docked my craft nose to nose, so when in prograde, the engine faces retrograde, but firing the engine gives a prograde impulse, increasing my orbital velocity, while the plume goes backwards into the craft instead of away from it...

Game Version v4424 Operating System Windows 11 What Happened Radial decouplers won't decouple when a craft is loaded from a savegame. The same craft fresh out of the debug vehicle editor works fine. What Was Expected I expected my boosters to fall off the sides. Reproduction Steps Create a...

Game Version 2026.5.7.4397 Operating System Windows 11 What Happened All parts reset to Stage 0 What Was Expected If you move the craft, by grabbing the capsule / root part, in the debug vehicle editor, all parts end up with stage 0. Reproduction Steps Start Vehicle Editor with the menu...

Game Version v4397 and v 4337 Operating System Windows 11 What Happened If you build a vehicle and stack two docking ports, when you undock from the bottom one, the top docking port, shoots off, or flips around the geometry at 0.3 gigameters/second. When done in space, it goes a lot slower...

Game Version 2026.4.17.4184 Operating System Windows 11 What Happened Upon launching a New Vehicle, right clicking on any part of the rocket fails to bring up the right click menu, so fuel levels nor engine activity cannot be verified. If you go to Map mode and back, sometimes it will be...

Game Version 2026.4.15.4141 Operating System Windows 11 What Happened Created Vehicles unable to launch. Right click menu displays engine is active, while IGNITE button states no engines active. What Was Expected Engines to start and rocket to fly Reproduction Steps Start in Sandbox or...

Game Version 2026.3.7.3848 Operating System Windows 11 Home version 10.0.26200 Build 26200 What Happened Crash to desktop with no error message when I click start if set to sandbox mode. Starts normally in Test mode. Note, I enabled docking via text editor: I edited ...\Kitten Space...

The more detail you provide, the easier it is to reproduce and fix the issue. What you were trying to do: Dock two craft in Earth orbit at 262km altitude What happened instead: Upon clicking "Dock" in the right click menu, but craft vanished, then a second later, the game crashed to desktop...