Color Scheme is not remembered (5.0.4 64b - 539)

Hi,
every time I select any color scheme and then click OK in Settings -> Program Settings -> Colors -> Color Scheme, then the color scheme is applied, but the selection is not remembered when I go back to the same setting, the selection in Color Scheme is gone.

Could you please check?

Thank you.
Richard Bukovansky

Empty scheme means don't change scheme.
Scheme is apllied and remembered