webeindustry
Okay, this problem is very sporadic and frequent. I know what you're talking about with the missing icons. When the forum is in the state that I get the Oops error message all over, those icons do not translate for me just like in your picture. When they do load, it's a sign that the error message will not appear.
I converted my site to Nginx yesterday from Apache, enabled Secure hosting, and added HTTP/2.
STILL is not fixing my problem. Now I'm out of ideas.