245448 2022-09-20 14:20:50 -0700 MutationObservers: document mutations - parser script insertion mutation & removal of parent during parsing 2026-04-07 22:42:25 -0700 1 1 1 Unclassified WebKit DOM Safari Technology Preview Unspecified Unspecified RESOLVED DUPLICATE 311706 http://w3c-test.org/dom/nodes/MutationObserver-document.html BrowserCompat, InRadar P2 Normal --- 1 ahmad.saleem792 webkit-unassigned ap bfulgham cdumez karlcow rniwa webkit-bug-importer oldest_to_newest 1899937 0 ahmad.saleem792 2022-09-20 14:20:50 -0700 Hi Team, While going through Chrome Monorail, I came across following w3c test suite in relation to MutationObserver, which Safari 16 and STP 153 fails: Link - http://w3c-test.org/dom/nodes/MutationObserver-document.html Chrome Commit - https://chromium.googlesource.com/chromium/src.git/+/5a3def7f350a35e7e481714f0d3851c9434cdeec ______ Safari is failing following two test cases: > parser script insertion mutation > removal of parent during parsing ______ These are also failed by Firefox Nightly 107 while only Chrome Canary 108 pass them. I was not able to find related bug, so I thought to great so we can track and if they are not needed then we can document our rationale at least. Thanks! 1901607 1 webkit-bug-importer 2022-09-27 14:21:18 -0700 <rdar://problem/100476268> 1901681 2 karlcow 2022-09-27 22:14:11 -0700 The link on WPT https://wpt.fyi/results/dom/nodes/MutationObserver-document.html?label=master&label=experimental&aligned 2197875 3 ahmad.saleem792 2026-04-07 22:42:25 -0700 *** This bug has been marked as a duplicate of bug 311706 ***