Joinpath fails on splitdrive output

General Usage
4

Thanks for your help. It is related to my previous question Splitpath on UNC shares where joinpath(splitdrive) also fails:

julia> splitdrive("\\\\svfae01-solid01\\SED\\SE")
("\\\\svfae01-solid01\\SED", "\\SE")

julia> joinpath(splitdrive("\\\\svfae01-solid01\\SED\\SE"))
"\\SE"