The following tests fail in Chrome but timeout in Safari:

intersection-observer/disconnect.html
intersection-observer/display-none.html
intersection-observer/edge-inclusive-intersection.html
intersection-observer/iframe-no-root.html
intersection-observer/multiple-targets.html
intersection-observer/multiple-thresholds.html
intersection-observer/observer-without-js-reference.html
intersection-observer/remove-element.html
intersection-observer/root-margin.html
intersection-observer/same-document-no-root.html
intersection-observer/same-document-root.html
intersection-observer/same-document-zero-size-target.html
intersection-observer/shadow-content.html
intersection-observer/unclipped-root.html
intersection-observer/zero-area-element-hidden.html
intersection-observer/zero-area-element-visible.html