This should be reported to the Kodi developers on GitHub with screenshots or video to explain the issue.
Ok, thanks will do.
Unfortunately, not specific to LibElec. The exact same thing happens on OSMC. I use automated remote sftp scripts to copy/remove/update files/folders (i.e., not using Samba) onto a Raspberry Pi3b+ on the latest stable KODI/OSMC. If I have used "File Manager" to navigate to a particular media [e.g. TV Shows/specific show] folder -- and am still "in" that folder when the directory is removed -- I have to restart and/or reboot KODI/OSMC to get my external USB media drive back on-line.
Interesting, i did wonder if it was just libreelec. thanks