I was looking through recipes, and I found that you make steel using iron and oxygen! Is this a bug? In real life, mixing iron and oxygen at high temperatures will make rust. I would worry that uneducated viewers might actually believe that that’s how you make steel in real life.
Are you planning on fixing this bug at any point in time?
It’s not a bug, it’s a game balance choice, to enable O to have a wider range of uses than just the basic smelting recipies.
In general, Prosperous Universe recipes should not be used as a manufacturing guide for real life. If it helps, you can imagine that the oxygen isn’t being mixed with the iron, it’s being used to power the furnace that creates the high temperatures required for steel production.