A few observations, I think they're related.

Quirk 1 Repro

1. Click a bookmark
2. Navigate to another page within it
3. tap the URL bar to edit the URL
4. Notice the listed URL was the original bookmark's URL, not the new navigated-to page.

Quirk 2 Repro

1. Do a search from main page
2. Click a search result
3. Notice the page title is still Google

Quirk 3 Repro

1. Create one bookmark
2. Navigate to another page.
3. add a bookmark on that page
4. Notice: suggested the same page name as the last bookmark (which was no longer valid)

Quirk 4 Repro

Share button shares original bookmark url, not current page url.

Thoughts

Seems like the url bar is not updating properly when navigating.