might be interesting for some people. You can work-around this problem by creating a blueprint of an already existing pump/signal.
Using the blueprint works without a problem
while trying to fill up Turrets with red ammunition I miss-clicked on a Stonewall or a ConstructionBot. (Edit: Or an enemy. Was happening while using blueprints/turrets to raid bases as they shoot 20x as much as a player somehow). I was kicked from the Server and a corrupted savegame got ...