Number control doesnt reload element

I have a problem with the number control type. Basically my element has a CSS animation on scroll using ScrollTrigger (just adding the animation class on scroll).
If I edit the number control label it should reload the animation in the builder, but nothing happens, it remains static and I have to open the page to see how the animation changes.
Its a problem with the number control type as I have tried other controls of the element and they reload the animation successfully.
I have been looking at the documentation and didnt find any argument that handles a live reload. I guess Im missing an additional code for the number control or maybe Im facing a bug?