Just submitted a pull in Github:
Spotted that non-admins (or, rather, editors with edit access to pages but not to access the dashboard) were having alignment/incorrect icon issues on the live search field when editing a page. Turns out that the <a> link wasn't being correctly closed for people without full dashboard access, causing the <a> to encompass the search field on the right hand side of the toolbar. Basically pushed the search input field down and right a good number of pixels and added a button highlight and incorrect 'edit' pencil icon to the search field area.
See attached for example.
Fixed in the pull request above.