Bug - Postprocessing material not compiling when parameter promoted

Hi everyone,

I’m facing something I cannot figure out. It really looks like a bug. I have a simple postprocessing material as you can see in attached pictures. In a clamp, I have Min=0 and Max=1, when I promote “Min” parameter, which is by default at value 0, it shouldn’t change my render at all. BUT, the material doesn’t compile anymore. If I delete this promoted parameter, it compiles again.
I’ve tried many things without succeeding. It seems bugging at this step of the graph only, because if I promote other parameters it works.
Please find my scene zip here :

Thank you for your help !