I actually had a similar issue with a folder within my main SMB share which did not display in Windows Explorer, I could however browse to it via the exact path. Turned out to be the Windows folder attributes, not the Unraid attributes. The folder was \\dataserver\store\hyperoo. When I accessed cmd prompt, and typed attrib \\dataserver\store\hyperoo, the attributes showed as SH (System and Hidden) so I removed these via attrib -S -H \\dataserver\store\hyperoo and now the folder is visible from all devices.
