"Rating" and "Colour Label" not saved

[Peter2]

I started to play around the first time with Rating, Colour Label and Category.

"Category" is displayed at thumbnail and stored with the image - I can filter all images for "family" and so on.
"Rating" and "Colour label" are displayed near the thumbnail only after setting them; later I can not filter them (neither "rating 3" nor "unrated") - nothing is displayed. After refreshing the display "Category" still exists, but "Ratings" are gone.

What´s wrong?

Peter