a little while ago blue science's recipe was changed to require sulfur instead of solid fuel.
Krastorio has still not had this update

I check it and seems right to me in the latest versions (IR and K), give me some screenshot of what u are talking about for give me an idea if the bug is still

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.

https://imgur.com/gallery/PwQtivI

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 Isn't "outdated", Krastorio version use solid fuel.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.

There isn’t. The OP just didn’t know that you can select the recipe at startup.

There isn’t a problem. The OP just didn’t know that you can select the science recipe at startup. I know that didn’t either.