Recolor artwork doesn't seem to work well...

Hi!

Recolor artwork doesn't seem to work well. Here is the artwork with the original colors (three Global colors using different % of Tints):

Here is the artwork after selecting a Generative Recolor color palette:

As you can see, only one element changed color. Same here:

And this is when I choose colors from a photo using the Color Theme Picker:

What is the problem?

Thank you!