Two issues: 1. Toggle to close the sidebar is not visible on small displays:  2. Sidebar does not feature focus trap https://user-images.githubusercontent.com/42591237/274281340-fecd73f7-668c-4de2-8e76-faa2a67673ab.mp4 Also see the discussion in https://github.com/nextcloud/server/issues/36964#issuecomment-1757697143 and below
Two issues:
Aufzeichnung.2023-10-11.145807.mp4
Also see the discussion in #36964 (comment) and below