Create a page long enough so you can scroll down at least one screen.
Add an anchor halfway down the page
Save the page
Access the page, using # in the URL to display the page at that anchor point.
Observe the page shows, but does not scroll down to the anchor point.
This problem occurs on Chrome version 88.0.4324.190, but works correctly on Chrome version 88.0.4324.150)
The anchor works correctly on Firefox and Edge.
We have made no changes to the confluence version, and the pages that are effected have been around and unedited for months or years.