Thanks for the reply.  It's been a long time since I admin'd a linux system so I'm not quite following your response.

I'm seeing the issue just by doing the following steps:

1. start webterm
2. ls /Workspace/Users (works fine)
3. tmux
4. ls /Workspace/Users (fails)

I've never seen tmux not "just work" on any other machine/VM.  Could you elaborate on your answer:

• How would tmux not be under the same user context as raw terminal?
• What environment variables need to be set correctly?
• How do I check ACLs on /Workspace/Users?  How would an ACL have an impact on raw term vs tmux?