STR: 0. Enable session-saving 1. Include a local file in your open tabs 2. Quit Camino 3. Delete/move/rename your local file 4. Launch Camino 5. Examine the tab and the location bar; compare the site icon ER: Document icon in both the tab and the location bar AR: Document icon in the location bar, no icon in the tab It might be a reasonable argument that we should show the error page site icon for missing local files, too, but that's not the regression here (indeed, anything outside the session restore case is not a regression; if you attempt to load a missing file during a session, everything behaves properly).
This is WFM, btw. I'm not sure how long it's been WFM, but it's been quite a while.