Hi there, I just found out that if you want to give a star rating und click on a star it doesn’t change the color. When you hit save the selected stars are correctly displayed. For UX it would be nicer if the color changes and you see what you have rated. You can see this issue also on your demo sites.
the Stars should become filled when you click the star rating, albeit they remain the unhovered color. Something we can probably address with a little CSS.
Are you not seeing any fills after selecting the review rating?