When a change is made to a module it does not update right away. Mostly when I make changes to borders, background colors, text colors, margins, etc… I need to click done and refresh the page many times before the change shows.
I have tried Chrome and Safari. Cleared the BB cache, caching plug-in cache and Deactivated the caching plug-in and it still does not work properly. I don’t recall it doing this before the update.
I just tried playing around with your site and the problem also happens on a new page as well. Would you be able to get in touch with your hosting and see if they have server side caching enabled? Also, I did notice the problem only happens when changing styling properties. Maybe ask your hosting as well if they’re doing something different to the /wp-content/uploads/ directory. The CSS/JS cache files are stored there, specifically under /wp-content/uploads/bb-plugin/cache/. They could be caching all files under that directory only.