Comment 4 for bug 1693030

I have confirmed that it is the x-systemd.automount option that is causing this. I note the duplicate sidebar entries also occur in (at least) PCManFM and Thunar but not Dolphin so it is not specifically a Pantheon Files bug. I suspect it is a "feature" of systemd and gvfs so any filemanager using gvfs and GVolumeMonitor will experience this. It may be possible to work around this by detecting entries in the Device list with the same path and only showing one.