Support?

1. Try simulating 5 scrolls+navigations: Simulate
2. Go back 5 times, notice jumping behavior.

1. Now simulate again
2. Tick this box: history.scrollRestoration = "manual"
3. Go back 5 times, notice that the scrolling remains constant

history.scrollRestoration = "auto" is the default behavior: scroll is restored to where the user was before changing URL (via pushState, or location.hash)