Shane,
It's not a problem usually. When you don't 'broadcast' the SSID all you are doing is suppressing it in the beacon messages. A client, however, will still have the SSID in clear text when it is probing.
What is probably happening, is the device is hearing the probe/probe responses at the same time it is scanning and it's able to link the mac address of the AP to the SSID, thus showing it to you.
Some devices do this, some don't, and as your people said, not a huge problem really.
Steve
HTH,
Steve
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