Chrome doesn't care about closing html tags. If they are mising the document is invalid but chrome will render it anyway and just add the closing tag where it thinks it should be.
At the other end, Firefox goes beyond the standard and will block certain connections that should be allowed by the fetch standard (the setting to disable that is called enhanced tracking protection).
So chrome allows things things it shouldn't while Firefox blocks some it shouldn't
Honestly it might be the best Star wars movie, period. At least from todays perspective. The original trilogy was groundbreaking for their own time but haven't aged the best. As with many media, what was innovative 40 years ago is cliche and stale today.