Load https://tobireif.com/demos/grid/ in Safari. The blue loading bar appears and disappears - all good. In the URL bar change the last character (the digit 1) to "2", enter. The blue loading bar appears - but doesn't disappear.
Can you please clarify steps to reproduce? The URL doesn't end with "1" after loading this webpage for me.
The page has since changed - sorry! Please try the provided steps with this URL: https://tobireif.com/demos/grid/grid.html
<rdar://problem/37544933>
I could reproduce using Safari 11.0.3.
Thanks for investigating!
This is a bug in Safari with regards to updating the progress bar for same document loads. And the fix will be tracked in <rdar://problem/37544933>. This bug is not specific to <https://tobireif.com/demos/grid/grid.html>. It occurs whenever a person explicitly changes only the fragment portion of the URL in the address bar. That is, it does not occur when clicking on a hyperlink that navigates to a fragment in the same document (regardless of whether the fragment corresponds to an actual anchor name). Disregarding the policy decision phase of the load, a same document load finishes the load immediately without providing same kinds of progress updates to the embedding client (e.g. Safari) as it would have if it was a navigation to a different document.
Actually, this bug is a duplicate of <rdar://problem/11569602>.