Bug 296420

Summary: setUnsafeHTML won't call the connectedCallback/constructor
Product: WebKit Reporter: mic.gallego
Component: DOMAssignee: Ryosuke Niwa <rniwa>
Status: RESOLVED FIXED    
Severity: Major CC: cdumez, lwarlow, rniwa, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: All   
OS: iOS 18   
Attachments:
Description Flags
Reduction none

mic.gallego
Reported 2025-07-23 20:18:04 PDT
Hi, When using declarative shadow dom, Safari has an annoying bug where the constructor and connectedCallback are not called, making the feature basically unusable. You can reproduce it in this codepen: https://codepen.io/bakura10/pen/ByozpZL Chrome will have this: Constructor Connected Disconnected Constructor Connected Safari has this: Constructor Connected Disconnected Thanks!
Attachments
Reduction (616 bytes, text/html)
2025-07-30 20:44 PDT, Ryosuke Niwa 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Luke Warlow
Comment 1 2025-07-29 07:53:41 PDT
This works correctly in latest Safari Tech Preview, so has already been fixed on trunk.
Radar WebKit Bug Importer
Comment 2 2025-07-30 20:19:12 PDT
<rdar://problem/157174282>
Ryosuke Niwa
Comment 3 2025-07-30 20:23:27 PDT
This bug appears to be fixed on the latest main / STP 221.
Ryosuke Niwa
Comment 4 2025-07-30 20:44:25 PDT
Created attachment 476229 [details] Reduction
Ryosuke Niwa
Comment 5 2025-07-30 20:52:10 PDT
Pull request: https://github.com/WebKit/WebKit/pull/48757
EWS
Comment 6 2025-07-30 22:12:47 PDT
Committed 298069@main (5a7c64a0cf07): <https://commits.webkit.org/298069@main> Reviewed commits have been landed. Closing PR #48757 and removing active labels.
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