This is a tracking task for [potentially] making the sticky header the vector (2022) introduces available on all pages, in all namespaces.
|Talk pages (all namespaces)||T328133||✅ Done|
|Talk pages (article and user talk)||T304188||✅ Done|
|History pages||Context: T328133#8585522|
The need for this ticket emerged during the 14 February 2023 Editing - Web check in meeting.