when ever a Client Adjusts the Spotlight range the server will throw this error:
Warning: Validation of sync value ID 9 failed.
the result is that the spotlight range only changes locally for the person that adjusted it and the server wont save the change / wont sync it to other players.
i tested it on 3 platforms, Torch Dedicated, Space Engineers Dedicated and Singleplayer hosted with a friend.
How to Recreate:
set up a dedicated server with the star system world, no mods.
join server and spawn with the moon rover.
once spawned in the rover, try to adjust the spotlight range. server should throw the error.
it doesnt matter what spotlight you adjust the range with the error happens no matter what.
once you adjusted the range, save the world and restart the server.
the result will be that the spotlight range will be reset to its previous state / default state and therefore it did not save.
same thing for other players, if a client adjusts a spotlight range it wont change for other Clients on the server.
one important note for a singleplayer hosted world, if the host adjusts the range it will get saved and connected clients will see the change but if a client adjusts the range it wont sync / save.
i of course verified my game files, deleted the roaming folder and restarted steam after deleting the roaming folder, nothing helped...