Hash anchor navigation fails on page reload

[jonchurch]

The Problem

Reproduction

1. Open https://lodash.com/docs/4.17.21#concat in a new tab - scrolls to anchor ✅
2. Refresh the page - scrolls to top instead of anchor ❌

Theory

The docs layout uses a nested scroll container (.doc-container has overflow-y: auto). The document itself doesn't scroll - scrolling happens inside that container.

On fresh page load, browsers seem smart enough to scroll nested containers to bring anchors into view. On reload, scroll restoration kicks in and restores the document scroll position (always 0), which seems to override hash navigation. The nested container's scroll position isn't restored.

Console check:

console.log('document scrollY:', window.scrollY)  // always 0
console.log('doc-container scrollTop:', document.querySelector('.doc-container').scrollTop)

Related

• Anchor tags are not working in Chrome on first load #243 (which doesnt repro anymore)