I had the problem of file sharing (SMB) in 13.2 from a Mac server causing Mac clients to hang. I switched off file sharing on the server, killed/rebooted all the clients, tried again, they all would still hang.
That thread mentioned custom icons. My drives had custom icons, so I thought "Why not try?" and deleted the custom icons. Now file sharing is working. I wouldn't have believed that myself but it may be there's some secondary effect at work there (updating drive attributes / metadata). Anyway I have file sharing back, for now...