NextCloud (owncloud) remote file mounts from GNOME Online Accounts sometimes get re-mounted/re-connected by themselves
A big annoyance I have is that the nextcloud account I have set in GNOME Online Accounts in the control center... sometimes automatically connects/mounts when I wake up my laptop (or desktop) computer from sleep, even if I had unmounted from Nautilus before. It happens often but not everytime, but when it does, it's in my face, it slows some things (like gthumb) down, and it represents an unnecessary network connection.
Instead it should be present in the sidebar, but not mounted/connected until I click on it. Other remote protocols (FTP, SFTP, etc.) do not exhibit this issue.