Caution!!! Krastorio 2 is now available! Therefore Krastorio Legacy is no longer supported!
This mod expands the endgame, adds 30+ HR buildings, 60+ technologies, new ores, new items and rebalances almost all vanilla game content, making it harder.
I can confirm that the Krastorio recipe for Blue Science still calls for Solid Fuel, the vanilla recipe calls for Sulfur but it's not a bug. I think the OP is asking if you were planning on keeping your Blue Science the same or changing it. The Krastorio recipe seems fine to me.
Yes, what u write is correct, from the option u could choise the vanilla recipe of chemical science pack (that is updated) or Krastorio version. Isn't "outdated", Krastorio version use solid fuel. I still don't get where is the problem.