This only happens in Safari. I create an XMLHttpRequest and get a console error.
XMLHttpRequest cannot load 192.168.0.87/cgi/app due to access control checks
The strange thing is, that is, I try to do the same the second time, it passes. Is there a difference in Safari from Chrome, IE, Edge and Firefox? This is not a scripted script; it is downloaded from the same server as the page itself.
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