This test is testing selection across attachment element. Such a test is better suited as a dump-as-markup test.
Pull request: https://github.com/apple/WebKit/pull/250
Pull request: https://github.com/apple/WebKit/pull/252
Pull request: https://github.com/WebKit/WebKit/pull/7469
Committed 257768@main (e8b876bcb7bb): <https://commits.webkit.org/257768@main> Reviewed commits have been landed. Closing PR #7469 and removing active labels.
<rdar://problem/103279306>