NEW 267421
iOS 17: Back / forward navigation doesn't properly restore scroll position if app banner is present 
https://bugs.webkit.org/show_bug.cgi?id=267421
Summary iOS 17: Back / forward navigation doesn't properly restore scroll position if...
Mads Erik Forberg
Reported 2024-01-11 10:27:48 PST
Steps to reproduce: 1. Install app related to www.vg.no: https://apps.apple.com/us/app/vg/id381071021 2. After app is installed, go to https://www.vg.no/?ios-bug=true (query parameter is there to avoid JavaScript workaround) 3. Click a link with https://www.vg.no origin (to get the app banner) on the front page. 4. Swipe back to the front page and the scroll will not be restored. Screen recording of the issue: https://drive.google.com/file/d/17c5NL52DZ4El60k3TiCZL6pyNqK8_vxm/view?usp=sharing Tested on: iOS 17.3 beta (21D5044a) - iPhone 14 Pro
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Radar WebKit Bug Importer
Comment 1 2024-01-11 10:30:56 PST
<rdar://problem/120853821>
Mads Erik Forberg
Comment 2 2024-01-11 10:40:36 PST
I log out `window.scrollY` + `window.history.scrollRestoration` to the JS console on the when using the `?ios-bug=true` param: https://i.imgur.com/N5qlccp.png
Mads Erik Forberg
Comment 3 2024-01-12 00:51:35 PST
A theory is that it happens if the next page has app-banner but the first page doesn't.
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