Adguard is a particular culprit. With that installed, you can only get initial comments in YT and sometimes not even that. Any attempt to expand the nested comments just gives you a swirling wheel as YT tries to load the comments and fails. Safari is so buggy these days that I have had to dump it in favour of Mozilla equivalents.
Pro-tip for Youtube. Forget Safari - try some flavour of Mozilla like Waterfox and install "Enhancer for Youtube" add-on. No more adverts interrupting playback and it doesn't affect the comments section. Not available for Safari, sadly.
Pro-tip for Youtube. Forget Safari - try some flavour of Mozilla like Waterfox and install "Enhancer for Youtube" add-on. No more adverts interrupting playback and it doesn't affect the comments section. Not available for Safari, sadly.