186480 2018-06-11 00:13:25 -0700 IntersectionObserver freezes safari on localhost 2023-08-13 12:28:14 -0700 1 1 1 Unclassified WebKit UI Events Safari 11 Unspecified Unspecified RESOLVED INVALID P2 Trivial --- 1 markus webkit-unassigned ahmad.saleem792 ap simon.fraser oldest_to_newest 1431721 0 markus 2018-06-11 00:13:25 -0700 Started by posting the issue here https://github.com/w3c/IntersectionObserver/issues/302#issuecomment-395895715 Problem only occurs on localhost const IntersectionObserverOptions = { rootMargin: '0px 0px 800px 0px', threshold: 0.0 }; this.iIntersectionObserver = new IntersectionObserver(entries => { if (entries[0].intersectionRatio <= 0) { return; } if (entries[0].isIntersecting) { this.iIntersectionObserver.unobserve(entries[0].target); this.loadMoreProducts.emit(); } }, IntersectionObserverOptions); removing this makes the page load properly 1431955 1 simon.fraser 2018-06-11 10:55:44 -0700 What browser are you reporting this against? Safari doesn't support IntersectionObserver. 1432219 2 markus 2018-06-12 00:05:21 -0700 The issue I first filed at the pollyfill repo.. they told me to file it here. :/ https://github.com/w3c/IntersectionObserver/issues/302#issuecomment-395895715 1432870 3 simon.fraser 2018-06-13 16:38:41 -0700 So you're saying that the polyfill triggers the hang? 1432902 4 simon.fraser 2018-06-13 19:09:51 -0700 Also where is a live URL we can test with? 1432972 5 markus 2018-06-14 05:55:18 -0700 Well I can't provide a link for you to test a localhost issue :P I have been trying to create a minimal repo but I ran in to problems (unrelated to the issue). 1970962 6 ahmad.saleem792 2023-08-13 10:47:37 -0700 It seems the user left comment on GitHub repo (on Comment 02): "FYI this was due to missing POLL_INTERVAL setting... once set it worked locally.. but performance get's super bad when navigating the site..." So it seems it was issue on polyfill side from end-user, can we close this? @Simon - any thoughts?