The table of contents when loaded on https://en.m.wikipedia.org/wiki/Hollis_Township,_Peoria_County,_Illinois causes the first heading to jump down like so:
This is a performance issue as it requires an unnecessary re-rendering of the entire page layout and can be a nuisance to users by impacting scroll behaviour position.
Luckily it should be relatively straightforward to address.
QA Results - Beta
QA Results - Prod