Safari on MacOS misbehaves
For some number of past iterations, Safari - although my favourite browser - has to take a back seat as I use Chrome and Brave to navigate some webpages;
Feedback - Safari - Apple - for example this Apple site does not render a comment box and so I can't use Safari to log a bug; (see images attached)
Then, on Amazon; https://www.amazon.co.uk/gp/video/storefront/ref=atv_nb_sports?contentType=merch&contentId=Sports&merchId=Sports - "sometimes" Safari mostly will render the page but not the "play button" when you hover over a correctly rendered element. Clearing cache, Force quitting Safari and even deleting all history may get it to behave correctly, easier to switch to another browser.
Further example; https://www.britbox.co.uk/watch/Episode-3-43116 BritBox just displays a black screen. Their website is owned by iTV which also suffers from the lack of a play button at times.
I use extensions; 1Password 7.9.5 and AdBlock Pro 10.1.3 but loading without extensions shows that they are not the problem.
Safari; 15.5 and macOS Monterey 10.4