List of steps to reproduce (step by step, including full links if applicable):
View a page with TOC.

What happens?:
"Using Edge (version 101.0.1210.32), I can't click the TOC sidebar; also the "page-down" scrolling behavior switching between the sidebar and the main text is hard to describe or predict.

What should have happened instead?:
"The TOC does work as expected in Chrome, which is odd because the two browsers share an engine."

Software version (if not a Wikimedia wiki), browser information, screenshots, other information, etc.:
Report by David Brooks copied from Wikipedia:Village pump (technical).