Well I suppose it's how you define plugging in something that's supposed to be passthru and having it affect the thing that's passing it through. Personally I'd think passthru means "passthru", not "passthru only if I feel like it!" :).
Yeah sorry, I wish I could give more information but I'm not in IT here and I'm not familiar with our network. I just noticed it and back in the olden days if this was an open-source project I'd open a ticket with bug information...I learned a lot fr...