Since the Sep 2022 update w/ the new furnace UI, NFR seems to be increasing the fuel on every tick. If, for example, you put 1 fuel in an item configured to ignore fuel consumption and turn it on, the fuel will keep increasing at every tick of consumption, creating new fuel out of nowhere. For instance, I have lanterns and tuna can lamps configured to ignore fuel consumption and they both are generating fuel instead of simply staying at 1 fuel. Stone fireplaces (also configured to ignore fuel consumption) are doing the same thing w/ wood.

Yep, we're seeing the same result with several different items.  Thinking maybe the timing changed, but the timing for the plugin didn't, of course, so the way it's operating, by adding one just before the lantern runs out, actually happens too quickly, so it must be happening twice in "one tick" of the item.

I tested it on four furnaces with 1000 fuel in each and they all add 1 new fuel at each tick ,

i tried to set it to false for tuna cans becase they are giving so much but it isnt seem to change still producing, ill ahve to try without the plugin mayby its like rustedit/rust or somthing?