A problem with a color picker in Hue saturation curves

[ocean-juli]

I have a problem with a color picker in Hue saturation curves in Premiere Pro CC 2019.

I grab a color picker in for instance Hue vs Sat and select the sky on my project.

What I noticed down there -

there’s no 3 points I get started with.

It didn’t add any points.

macOS High Sierra

macOS Mojave

Do you have any decision of my problem?