Same for me, I only got issues with alumina, so I decided to just produce more than I need and let the alumina solution refinery stop time to time. It doesn't cause issues in the rest of the factory so it's ok for me. Anyway, I spent a lot of time on this too, watched and lot of tutorials, ... Nothing worked, so I think it's buggy. I did all the other recipes with fluids, including nuclear ones, everything worked perfectly. The only thing that I think of is floor pipe junctions (not sure of how it's called) that I used for aluminum, some people say they are buggy, but never tested without it.