There's a bit of a longer description in the post here, but in short, I'm collecting gold from a volcano in a relatively cool pool of oil (currently between 85-100*C, well under oil boling point), while the rest of the room sits in vacuum.
No problems for 30+ cycles. I check the room, a tiny bit of oil has turned to petroleum + sour gas. Reload the day, all fine again for some 10+ cycles. Then, I catch it turning oil into petroleum + sour gas again mid-eruption. I made a save during the eruption, but not before unfortunately. I reloaded the day, and the room stayed vacuumed through the eruption.
No sour gas:
You can see from the images/saves that it's exactly the same cycle, same time, therefore same volcano eruption, but one flash-boiled some oil to petroleum+sour gas, and the other didn't. The one extra wort on the picture should not make a difference, it was planted seconds before the screenshot was taken.
It seems a bit too random to be intended, but I'm not sure. Seems like a bug, but I might be wrong.
Steps to Reproduce
Really not sure - it happened maybe once in 30 cycles, and then again 10 cycles later. Reloading the day does not guarantee it will repeat. The savefiles are the best I can provide (unfortunately, neither before the eruption, both during).
This issue has not been confirmed by a developer yet.