So what is happening is that when you delete a block that is part of some sort of group, the ship doesn't actually believe you and insists it is still there in terms of stats. Some effects of this are that if you have power, and connect two parts, then delete the connection, they are still considered connected. The same goes for all of the other things that are looked at in groups, like thrusters, missiles, antimatter cannons, salvage beams, and so on.
Quick edit: Closing the game and starting it up again makes everything proper, but it will still happen once you keep editing. Also confirmed to happen in multiplayer.
Another edit: Forgot the version number, which is 0.133.
Quick edit: Closing the game and starting it up again makes everything proper, but it will still happen once you keep editing. Also confirmed to happen in multiplayer.
Another edit: Forgot the version number, which is 0.133.
