Cloudflare Origin CA / SSL Cert

I’m using Cloudflare to power my website. I’ve just set the SSL/TLS encryption mode to Full (strict) and added a Cloudflare Origin CA certificate to my server.

The website is operating as expected. However, when I login to the backend of Elementor, the icons in the dash are blocked out (the ones that correspond with each widget) and there are a few Chinese characters in their place. The icons on the frontend of my website load fine.

What could be causing the issue?

I’ve deactivated plugins and there was no change.

I looked at Cloudflare support documentation but the only compatibility issues I saw had to do with Rocket Loader?, which I do NOT have turned on.