Note the original issue has been fixed in LibreOffice and gvfs (see history above). Likely whatever is breaking again on 16.04 is a different issue -- and thus should be a new bug, even though it has similar symptoms. Please do NOT reopen this bug on LibreOffice -- if you think this is an issue that needs fixing in LibreOffice (and not in gvfs and friends), please open a NEW bug.
I would suggest to close the issue on gvfs on the same rationale (the original bug was fixed) -- but I am not a maintainer there.
Note the original issue has been fixed in LibreOffice and gvfs (see history above). Likely whatever is breaking again on 16.04 is a different issue -- and thus should be a new bug, even though it has similar symptoms. Please do NOT reopen this bug on LibreOffice -- if you think this is an issue that needs fixing in LibreOffice (and not in gvfs and friends), please open a NEW bug.
I would suggest to close the issue on gvfs on the same rationale (the original bug was fixed) -- but I am not a maintainer there.