Comment 12 for bug 536367

In some cases it fixes the problem but only in 75% of cases. Some times I have tried this method 5/6 times on a construction site and still nothing. I have tried setting it to 0 and waiting for 30 seconds, then increasing it again, or doing it quickly.

In one case with wheat I set all production sites that use wheat (mill, brewery, sheep farm, donkey farm, piggery) to 0 wheat, waited for existing wheat to be used up/removed, waited a further 30 seconds. Two wheat was still left on the road. I returned all sites to normal, they all filled up and began working at 100% and the two wheat was still on the road. I'll see if I still have a savegame of this, if it will be of use.