No way to set background color in Read More hover (Blog)

Hi.
The Normal state work fine, but when I try to set the background color of the Read More button for the hover state it seems to be impossible.
I set the color



then I apply and save.
In the front end, no background color appears.
When I reopen the module, no background color has been set.



What's going wrong?
Joomla! 3.10.11 PageBuilder Pro 2.16.4

Hi
you are using Page Builder CK, but on which addon are you working on ? Please give me few details
CEd

Sorry: I wrote it only in the subject...
The addon I was using is Blog.

I have checked and it works by my side
please give me the url of the page where I can see it

You said "it works", so I tested it again. Now it's working well (but the chosen color does not appear in the largest color box).
Sorry, maybe a cache problem...