Problems with backgroundColor in UI when creating a Solid layer in Timeline

Hi all

When you are running scripts that use the backgroundColor property to draw swatches (like colorLibrary and SwatchYouWant) and try to create a New Solid in TImeline, script panels go gray. This way, you cannot use the color picker to select your Solid's color. This was possible with versions older than Adobe CC. Anyone knows anything about this issue?

Thanks.