Why can't I list saved WiFi networks?

[psz]

Cannot list saved WiFi networks

Hi,

I just bought an S6 and upgraded it to 5.1.1. Now I cannot list saved WiFi networks in WiFi screen in order to delete some of them. For testing purposes I added manually one with random name and password. It disappeared immediately.

During the first boot wizard seems the phone has restored WiFi networks, because phone is logging in to them fine, just in Settings it only shows the one in range.

Is the lack of saved networks a bug or intended behavior from Samsung?

Thanks.