Per CSS spec, U+2028 LINE SEPARATOR should be treated as a forced break. See https://github.com/w3c/csswg-drafts/issues/6992. Currently, it is not rendered in WebKit.
<rdar://problem/88470339>
If I follow GitHub thread, I think this WPT test is relevant for this: https://wpt.live/css/css-text/line-breaking/line-breaking-022.html