It seems since Nextcloud 14, there’s no way whatsoever to remain logged in? Is there any way to re-enable this? It used to be that certain apps forced this off, but it was possible to override this by removing the “rememberlogin” setting in the apps info.xml - which doesn’t seem to be there anymore.
Note: In this particular case security is a non-issue. If that particular installation had no passwords, it’d be fine. Its only directory is a public share anyway.