I have two paper mills and the paper resource max is set to 250. It reached 250 and both mills paused, as expected. Once the level dip too low only one of the mills restarted the other is still showing as paused. The paper is down to 5. I have a screen shot and a saved game to share if it helps.
Hey. I had that problem on two(out of like 8) of my mines. I lowered the amount so that all of the same type of mine paused again and then raised again so that the mines started producing again. That fixed it for me.
thanks, I will try that