Having the same issue but I don’t think this is actually resolved, because copying the child to the parent theme will only work until you update the theme and it resets. Any ideas?
One more bug… while my child style.css is being recognised and working ok, changes to the nivo-slider.css and superfish.css are not. Have tried including them as separate files and now in the style.css code but either way, they’re not showing up.
Trying to change the hover colour on the nav menu and the slider buttons to orange.