Simply, the navigation menu in the product menu the styling of it breaks due to missing borders on child pages that don't have child pages. Contrast to 7.0 where child page nesting was fully styled and easy to follow. Missing border lefts highlighted in yellow.
The contrast is also terrible can the styling be white?
Parity with 7.0.
Parity with styling of 7.0 not yet achieved, missing borders when child pages don;t have their own children. Missing features highlighted in yellow.