I found that test case which works on Firefox and Opera. It fails on WebKit nightly but works on Safari2 so it is a regression. Doing some tests, I have been able to locate the regression between r21869 and r21854.
This sounds like a result of <http://trac.webkit.org/changeset/21861> and <http://trac.webkit.org/changeset/21868>.
Took the test case from Wayback archive and changed it into JSFiddle: Link - https://jsfiddle.net/tmebu62g/show Wayback Link - https://web.archive.org/web/20080621114250/http://people.mozilla.com/~sayrer/2008/tests/innerHTML.html It is showing "PASS" across all browsers (Chrome Canary 106, Firefox Nightly 105 and Safari 15.6 on macOS 12.5). I think since all browsers are matching, this can be marked as "RESOLVED CONFIGURATION CHANGED". Thanks!
Agreed!
<rdar://problem/97934402>
*** Bug 93787 has been marked as a duplicate of this bug. ***