Bug 251592 - REGRESSION (Safari 16.3): Incorrect rendering of nested iframes with document.write
Summary: REGRESSION (Safari 16.3): Incorrect rendering of nested iframes with document...
Status: RESOLVED CONFIGURATION CHANGED
Alias: None
Product: WebKit
Classification: Unclassified
Component: Frames (show other bugs)
Version: Safari 16
Hardware: All iOS 16
: P2 Critical
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2023-02-02 08:35 PST by Matthieu Wipliez
Modified: 2023-02-23 13:24 PST (History)
3 users (show)

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Description Matthieu Wipliez 2023-02-02 08:35:25 PST 
The issue is that nested iframes with depth > 2 and not rendered correctly on Safari 16.3
This appears to be only broken on Safari 16.3, not previous or next versions (Safari Technology Preview seems unaffected).

Steps to reproduce :
Go to the URL: https://sample.teads.net/demo/bugs/safari-16.3-nested-iframe.html
Scroll down to the red rectangle
Observe that you see "hey there 0" and "hey there 1".

Expected: "hey there 0", "hey there 1", "hey there 2", "hey there 3".
Open the page on a previous version of Safari (16.1) or Safari Technology Preview, or Firefox, or Chrome, and witness the expected behavior.
Comment 1 Radar WebKit Bug Importer 2023-02-06 15:51:20 PST 
<rdar://problem/105102959>
Comment 2 Alexey Proskuryakov 2023-02-23 13:24:35 PST 
This does appear to be fixed already. You can also try with macOS 13.3 beta, or Safari 16.4 beta to double check.