Steps to replicate the issue (include links if applicable):

• Navigate to an anchor such as [[:en:w:Encyclopædia Britannica#1974–1994 ]]
• Keep watching the screen

What happens?:
The anchor's text and the subsequent text appear briefly at the top of the screen, and then the sticky header slides down to obscure the header and sometimes (I can't figure out why it's only sometimes) the first line of text.

What should have happened instead?:
Pre-position the anchor so that the anchor's text (to avoid confusion), and definitely the text under it, will be visible after the slide

Software version (skip for WMF-hosted wikis like Wikipedia):
Whatever is deployed on en wikipedia 10/19/2022.

Other information (browser name/version, screenshots, etc.):
Windows 10, Edge 106.0.1370.47 (64 bit).

This seems related to T317967, but the video attached to that doesn't show the sliding header.

Update: merging in T327594, which reported the same on other OS/browser combinations.