Dynamic Keyframe acts as Static Keyframe with ColorSlice

I'm trying to use dynamic kayframes for some ColorSlice adjustments, but instead of going gradually from a number attribute to another, it changes abruptly in each keyframe, as I was using Static Keyframes.

I'm in the same Corrector line than the node (number 3), and I'm placing the keyframe in the Color Corrector line.
It works well when I try to transition attributes in the "Primaries - Color Wheels" window.

Is it a bug? or I am doing something wrong?