To reproduce this issue: 1.) Got to Youtube on an iPad 2.) After the page has loaded background Safari 3.) Foreground Safari You would expect the layout to be the same as when you backgrounded it. However, it will only show a single column of thumbnails instead.
rdar://109837319
Committed 265603@main (e54ba88232e1): <https://commits.webkit.org/265603@main> Reviewed commits have been landed. Closing PR #15346 and removing active labels.