Sometimes you may have an issue with the Elegant Icon font loading, that it’s taking a little time to load the font resulting to show weird numbers and symbols for few seconds while the page is loading:
Or if your Google PageSpeed Insights is showing "Preload key requests" issue and recommending to add preload for modules.ttf font:
To fix this, you can add preload to the elegant Icon font.
Go to WordPress Dashboard > Divi > Theme options > Integration > <head> section, add this line of code:
<link rel="preload" as="font" href="https://yoursite.com/wp-content/themes/Divi/core/admin/fonts/modules.ttf" type="font/ttf" crossorigin="anonymous">
In the above code, change “
https://yoursite.com” to your main site home page URL.