Basic auth not trusted by cgi?

[simpsonlang]

If I configure the system with an account using a "\" like domain\username and login the camera stream shows a broken link. However if I login as admin it works.

I have identical permissions to the admin account and I have ZM_AUTH_RELAY set to plain.
When I enter the account into Users I have to use "domain\\username" or it won't get into the system as domain\username.

I need this functionality as I use mod_auth_xradius to pass authentication from the web server to a radius server using the ZM_OPT_USE_AUTH of remote. This works with the exception of the broken image link. I can however view the stills.

[simpsonlang]

I figured out if I switch from remote to builtin authentication then the images work fine. So it's not a "\" issue but one where when the basic auth user account doesn't appear to be trusted by the cgi when the creds are passed.