WordPress 7.1 Consistent Navigation with Persistent Toolbar

WordPress 7.1 introduces a consistent navigation model across the admin interface, fixing confusion around the top‑left “W” logo that previously served as a back button. The editor now displays the toolbar like all other screens (except in Distraction Free mode), and the logo is replaced by a dedicated chevron that always returns to the previous screen. When a site icon is set, it appears in the toolbar and the site title remains visible throughout editing, including on the canvas. The persistent navigation layer means the “W” logo always opens the About page, the site icon opens the site menu, and the chevron is the sole back button. Plugin developers must verify that any toolbar nodes they add still work in the Site Editor, and can filter them out with a check on $screen->is_block_editor() or $screen->id == 'site-editor'. The change also adds a new behavior for the Site Editor, which previously had no persistent toolbar.