Subgrids detaching when jumping with an active gravity/mass drive
This problem first came to me on a dedicated server, where I used my ship, equipped with a gravity generator and mass block gravity drive, to jump back to my base. The gravity drive was currently active and my ship was travelling at 104m/s. My ship is large grid, but it also has a small grid attached via an advanced rotor to mount gatling guns for extra forward firepower. When I jumped, the subgrid detached and collided with my jump drives, causing an explosion.
I managed to reporduce this in my own world by jumping a ship currently propelled by a gravity drive that also has a rotor small grid subgrid. I tested with small 5km jumps but there was no explosion, however when jumping 500km the subgrid detached and destroyed part of the ship. I also tested with non-gravity drive ships but the subgrids don't detach. As far as I know this only happens with gravity drive or other playermade propulsion systems.
This is a link to a video of the bug: https://youtu.be/Tv0OFOcuwHQ