Factorio Forums

I noticed that the "No Fuel" indicator blinked with heating towers even while they were at 1000 C (which may be intended behavior). However, then I did something (I don't know what) and it seems to have gone away, with the "No Fuel" indicator on the heating tower no longer appearing or blinking. I saved the game, and restarted the game and the discrepancy in behave persists. So, now I have two saves that should be identical except that they have different behavior in how the "No Fuel" indicator behaves:
I tried to create a minimal reproducible example but failed. It's worth noting that this save was originally started on map version 2.0.45-2.

It seems that indicators are on a global timer of sorts, and in one save the "No Fuel" state of the heating towers occurs in between the global indicator alert cycle. I think this is what is happening. The alert cycles every 1 second, and the heating tower in the example also has a 60 tick cycle by coincidence.

I've figured out that what I inadvertently did to achieve this discrepancy was go into "Editor mode" with time paused such that these cycles were offset between the saves.

I think it's fair to push this to "Not A Bug" or "Won't Fix".