Password protected sub dir affects subdomain

[brundle]

I have an end user who set up a password protected subdirectory. It is a subdirectory of a path that is a set up as a sub domain.

With the password protection on, it works for that subdirectory, but it also pops up an auth window on the sub domain root itself.

If you cancel the pop up auth it continues on to the sub domain root no problem.

Has anyone experienced this?

 

[TMC]

• Example URLs please? (via private message if it's a military secret)