Local Exposure not working on beginning Play

Hi. I’ve set a postprocessing volume on my scene touching values of LocalExposure until I was satisfied with the result.

The problem is that, when I hit Play, this settings are not visible, but when (still in Play mode) I change a single value (for example, I change Blurred Luminance Blend from 1 to 0.99 or checking of its tickbox), the changes of all Local Exposure settings pop magically to the scene.

Why happens this? Can I make the Local Exposure values from the beginning of Play Mode and not having to modify the values manually to see them?