Bug 210841

Summary:	Do not execute scripts that move between documents during preparation and execution phase
Product:	WebKit	Reporter:	Domenic Denicola <d>
Component:	DOM	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	cdumez, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	Safari Technology Preview
Hardware:	Unspecified
OS:	Unspecified

Description Domenic Denicola 2020-04-21 20:03:24 PDT

See spec change at https://github.com/whatwg/html/pull/2673 and tests at https://github.com/web-platform-tests/wpt/pull/19632. (Test results should show up at https://wpt.fyi/results/html/semantics/scripting-1/the-script-element/moving-between-documents?label=master&label=experimental&product=chrome&product=firefox&product=safari&aligned soon.)

Comment 1 Radar WebKit Bug Importer 2020-04-22 14:34:42 PDT

<rdar://problem/62211179>

Comment 2 Domenic Denicola 2020-04-22 14:45:37 PDT

Note regarding the test results: this bug is specifically about the after-prepare - and moved-back- cases.

The before-prepare-iframe cases, which both Chrome and Safari fail, are somewhat contentious and we're still discussing what to do with them on the spec side. See https://github.com/whatwg/html/issues/2137.