Some controls not working and Woo tabs issue

Hi, the following controls don’t appear to be working:

• Arrow Color
• Arrow Background Color

Also Woocommerce product tabs are not displaying correctly when your plugin is activated.

I’m using Divi theme 3.19 (Twenty Nineteen gives the same result), WordPress 5.0.2.
Tested on Chrome, Firefox & Edge.

The page I need help with: [log in to see the link]