Color problem in Sydney theme customization

For some time, color adjustment is no longer possible in the theme customization and in the row setting. Where can the problem come from? (Sorry for my english: I’m french)

Hello there,

Please share your site link here. And mention which section/element you’d like to have custom color. What does that element read?

Regards,
Kharis

Here is the link for the site:http://maldoror-theatre.com/
I do not have any changes to make. In the background, it is by modifying the margins that I realized that in the customization menu of the Sydney theme, the choice of colors was no longer possible either for the characters, the color of the background or the links: the color palette does not appear anymore!
The problem is the same in the page builder

The problem is gone, everything is OK. probably following an update … Thank you