Element removed by parent through removing all children should end up losing last remembered size
Pull request: https://github.com/WebKit/WebKit/pull/25247
Pull request: https://github.com/WebKit/WebKit/pull/25348
*** Bug 261020 has been marked as a duplicate of this bug. ***
Committed 275606@main (3db230251f3c): <https://commits.webkit.org/275606@main> Reviewed commits have been landed. Closing PR #25348 and removing active labels.
<rdar://problem/123975513>