WP 8.1 - limited number of hidden wifi networks

Hi,
I just found that (Lumia 630, latest dev. update)  cannot accept more than THREE hidden wifi networks. Is this "feature" described somehow officially somewhere? Can it be increased? Or am I wrong?
Thanks
Miroslav

Hidden WiFi networks increase battery usage as the device is constantly trying to call out for that network when not connected to one no matter where you are. Hidden networks are a false sense of security.
So for the sake of battery, the phone limits the number of hidden networks you can store.

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