Bug 218290

Summary:	Using ShadowRoot.delegatesFocus causes page to refresh
Product:	WebKit	Reporter:	Caleb Williams <caleb.d.williams>
Component:	DOM	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Normal	CC:	cdumez, smoley, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	Safari 14
Hardware:	Mac
OS:	macOS 10.15

Description Caleb Williams 2020-10-28 09:53:06 PDT

Attaching a shadow root with `delegatesFocus: true` will break a page of a click occurs inside the shadow DOM. A simple reproduction can be found a https://codepen.io/pen/MWeQaME

Comment 1 Caleb Williams 2020-10-28 10:15:02 PDT

Update: This seems to happen only when there is no to focusable child in the shadow root (including buttons due to how WebKit handles button focus). With something like an input in the shadow root, things work just fine.

Comment 2 Smoley 2020-10-28 11:07:43 PDT

Thanks for filing, I can reproduce this on Safari 14.0 but I haven't been able to reproduce it on Safari 14.0.1 or 14.1. Are you able to reproduce this on later builds?

Comment 3 Radar WebKit Bug Importer 2020-10-28 11:07:57 PDT

<rdar://problem/70771527>

Comment 4 Smoley 2020-10-28 11:28:07 PDT

Apple internal see rdar://66832677.

Comment 5 Smoley 2020-10-28 11:29:01 PDT


*** This bug has been marked as a duplicate of bug 215622 ***