Created attachment 464048 [details] Screenshot of the network tab that shows that the browser is stuck loading a css file Hello, Here are the steps to reproduce: 1. Go to https://disneycruise.disney.go.com 2. Execute the following code in the console window.addEventListener('pagehide', async () => { const r = await fetch(location.href); console.log(r); }); 3. Click on "Sign in or Create an Account", this is in the header close to the search bar on the top right. This should open a new page "https://disneycruise.disney.go.com/en/login?appRedirect=%2F but here the browser will start requesting the document of the page and few other resources but stays stuck while requesting "https://cdn3.parksmedia.wdprapps.disney.com/media/profile-spa/1.6.0-184/styles.7e26e406cfcd02d2aa32.css". After this, the browser refuses to load this URL "https://cdn3.parksmedia.wdprapps.disney.com/media/profile-spa/1.6.0-184/styles.7e26e406cfcd02d2aa32.css" even in new tabs, even in new windows, accessing this URL makes the browser stuck loading it. And the only solution is to close the browser and re-open to be able to access "https://cdn3.parksmedia.wdprapps.disney.com/media/profile-spa/1.6.0-184/styles.7e26e406cfcd02d2aa32.css" again.
I suspect that this is caused by zonejs, Promise is overridden by zonejs and the following code fixes the issue: var iframe = document.createElement('iframe'); document.body.prepend(iframe); window.addEventListener('pagehide', async () => { const purePromise = iframe.contentWindow!.Promise; const overriddenPromise = window.Promise; window.Promise = purePromise; // this makes the promise returned by fetch pure in the sense it is not touched by zonejs const r = await fetch(location.href); console.log(r); window.Promise = overriddenPromise; });
Thank you for the report! Could you please elaborate on what the user impact is, and why yo believe this to be a WebKit bug?
<rdar://problem/103608219>