Bing also caches AMP content: https://blogs.bing.com/Webmaster-Blog/September-2018/Introducing-Bing-AMP-viewer-and-Bing-AMP-cache https://blogs.bing.com/Webmast

Bing also caches AMP content: https://blogs.bing.com/Webmaster-Blog/September-2018/Introducing-Bing-AMP-viewer-and-Bing-AMP-cache https://blogs.bing.com/Webmaster-Blog/September-2018/Introdu... I agree that there is a UX problem to solve (the address bar should show the original URL, copying it should preserve the original URL, etc) but whether the webpage got loaded from the original site or from some AMP cache is irrelevant.