I right clicked the fuel to "remove fuel" ( I didn't know what it did, but I assumed it meant this ), because it meant I could remotely burn the left-most fuel first to clear out the remnants of coal.

However, after I then right-clicked again to cancel this action, the bots still went ahead and ...

In preparing this I searched for UDP, as well as a few other keywords and I couldn't find it suggested previously. Sorry if I'm mistaken about that.

TL;DR
UDP Writes - enabling easier Telemetry output from Factorio

What ?
Right now, we can write output to file with game.write_file, but we cannot output to ports or sockets.

If we could write to a port with game.udp_write(port, data) then we could fire-and-forget write to network sockets ...

Please find my save file with the issue attached.

The bug is apparent in stations "Joey Corless" and "Aiden Rooney".

The Joey Corless decider combinator is set to "<= 50k" and never is true even with 2 full tanks. The Aiden Rooney combinator is set to "<=49999" and is true when the tanks fill. In ...

I have 2 full storage tanks of oil (The pumpjacks have stopped), but the network is reporting "49k" oil and "<= 50000" is returning false on a decider combinator, so my train station never activates.

Changing this to "<=49999" returns true, so it's as if the tank is full at 49999 instead of 50000 ...