It seems that some new update has introduced a new bug in Eden Burning, where I cannot use oil refineries any more, as the refinery doesn't allow building any oil wells around it. The building instead now expects "cultivation area" like, for example, the lumberjack's hut does, which of course doesn't work. Luckily tractors aren't needed (though could be useful) to beat this scenario, but would be still nice it not being broken.