I renewed support just to report this bug so y’all better appreciate me!
In the 4.0 update, your custom css and js is stripping the character > out of the added css/js.
So for CSS it makes many styles invalid and stops processing the stylesheet, and throws javascript errors.
If you look at the code that is rendered, it shows as > instead of >
This has broken a lot of the custom styling on my site. If you have a fix, I’ll manually fix it until the next update, but this needs to get fixed asap.