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"...

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 ful...