It seems that Chrome 84 changed the way clicked links work for accordions/read more buttons.
For an example check https://www.w3.org/TR/wai-aria-practices-1.1/examples/accordion/accordion.html in Safari and Chrome 84.
In Chrome 84 the clicked link just remains under the mouse pointer thus making accordions and 'hidden' texts with 'read more' buttons open in a wrong way.
I tried looking in the changelogs for any kind of attribute that can disable this behaviour, but couldn't find anything.
Does anyone have a solution?