Thanks for the reply. However, this is not the same issue is the Google Fonts not being loaded properly. What I’m referring to is whether or not the APO changes the way preloading happens.
E.g., Page Speed Insights is now giving us the following recommendation:
<link rel=preload> to prioritize fetching resources that are currently requested later in page load. Learn more.
We have been using the plugin OMGF to manage preloading of these fonts. It was working until we activated the APO. I don’t understand why that would have any effect on whether or not the fonts are preloaded — but I also don’t know if it matters, since the APO is caching them.