Clicking a spec search result opens that page immediately. In overview the page fills the pane so the PDF can paint, instead of sitting white with green boxes. Next and Previous still zoom to one hit.
Clicking a spec result used to wait for the highlight lookup before the sidecar moved. The page now opens at once. Match boxes arrive when the lookup finishes.
Overview used to jump the camera onto every highlight box. That jump cancelled the first paint and left a white page with green boxes. Overview now fills the pane, the same way drawings do. Next and Previous still zoom to a single hit.