There is an issue that happens when using blueprints where the building is unlocked but the recipe is not. The building is placed, but the recipe isn't set when the technology is researched.
So, the proposal is to set the recipe when the technology is unlocked (by e.g. having the recipe set but hidden/non-operational)
Of course, player can just go to the building and activate the recipe. But this is easily forgotten, and more advanced blueprints may also require the recipes to be in a specific order.
Some examples:
- Smoke stack is unlocked from the start, but not with the N2 recipe. So when the BP is used before the unlock, the smoke stack is placed. When the Air Separator is added later, it doesn't work.
- Mixer: Unlocked with Organic Fertilizer, but not with the Fertilizer or Acid recipes.
- Burner (solid): unlocked with Burner, but not the Sulphur burning.
