[G3 Q&A, Help & Troubleshooting] shaarky:
[MENTION=5988026]iDefalt[/MENTION], can you try to disable "Scanning always available" in Wifi settings as Tobitege proposed ? Just how it behaves, because that seems helped me, but still I'm testing...

[MENTION=4877142]tobitege[/MENTION], it's really odd - but with DISABLED "Scanning always available" in Wifi settings I'm not loosing Wifi settings anymore.

I also searched the log with this disabled function for WifiConfigStore and there is no single line even when the settings got vanished.

When I'm storing however the configuration, the WifiConfigStore functionality is visible and seems to be right.

So the question is now to whom this can be reported ? I'm using it to make SmartLock function more reliable when I'm out of GPS signal (eg. inside the building).

Saving Wifi config :

07-05 21:52:28.175 E/WifiConfigStore(1105): addOrUpdateNetworkNative created netId=0
07-05 21:52:28.200 E/WifiConfigStore(1105): created new config netId=0 uid=1000
07-05 21:52:28.200 E/WifiConfigStore(1105): will read network variables netId=0
07-05 21:52:28.203 E/WifiConfigStore(1105): rewrite network history for "apwifi"-WPA_PSK
07-05 21:52:28.219 E/WifiConfigStore(1105): saveWifiConfigBSSID Setting BSSID for "apwifi"-WPA_PSK to any
07-05 21:52:28.220 E/WifiConfigStore(1105): saveWifiConfigBSSID Setting BSSID for "apwifi"-WPA_PSK to any
07-05 21:52:28.221 E/WifiConfigStore(1105): rewrite network history for "apwifi"-WPA_PSK
07-05 21:52:28.222 E/WifiConfigStore(1105): will read network variables netId=0
07-05 21:52:28.357 E/WifiConfigStore(1105): saveWifiConfigBSSID Setting BSSID for "apwifi"-WPA_PSK to any
07-05 21:52:28.360 E/WifiConfigStore(1105): saveWifiConfigBSSID Setting BSSID for "apwifi"-WPA_PSK to any
07-05 21:52:32.642 E/WifiConfigStore(1105): rewrite network history for "apwifi"-WPA_PSK

07-05 21:58:05.857 E/WifiConfigStore(1087): removeNetwork 0 key="apwifi"-WPA_PSK config.id=0 crc=2324631492
07-05 21:58:05.909 E/WifiConfigStore(1087): key="apwifi"-WPA_PSK netId=-1 uid=10076/0
07-05 21:58:05.910 E/WifiConfigStore(1087): addOrUpdateNetworkNative created netId=0
07-05 21:58:05.910 E/WifiConfigStore(1087): Setting BSSID for "apwifi"-WPA_PSK to any
07-05 21:58:05.913 E/WifiConfigStore(1087): created new config netId=0 uid=10076
07-05 21:58:05.913 E/WifiConfigStore(1087): will read network variables netId=0
07-05 21:58:05.926 E/WifiConfigStore(1087): rewrite network history for "apwifi"-WPA_PSK
07-05 21:58:05.936 E/WifiConfigStore(1087): key="apskoda"-WPA_PSK netId=-1 uid=10076/0
07-05 21:58:05.938 E/WifiConfigStore(1087): addOrUpdateNetworkNative created netId=1
07-05 21:58:05.977 E/WifiConfigStore(1087): created new config netId=1 uid=10076
07-05 21:58:05.977 E/WifiConfigStore(1087): will read network variables netId=1
07-05 21:58:05.986 E/WifiConfigStore(1087): rewrite network history for "apskoda"-WPA_PSK
07-05 21:58:06.022 E/WifiConfigStore(1087): saveWifiConfigBSSID Setting BSSID for "apwifi"-WPA_PSK to any
07-05 21:58:06.032 E/WifiConfigStore(1087): saveWifiConfigBSSID Setting BSSID for "apskoda"-WPA_PSK to any
07-05 21:58:18.694 E/WifiConfigStore(1087): rewrite network history for "apwifi"-WPA_PSK
07-05 21:58:18.696 E/WifiConfigStore(1087): saveWifiConfigBSSID Setting BSSID for "apwifi"-WPA_PSK to any
07-05 21:58:18.700 E/WifiConfigStore(1087): will read network variables netId=0
07-05 21:58:18.706 E/WifiConfigStore(1087): will read network variables netId=0
07-05 21:58:31.974 E/WifiConfigStore(1087): saveWifiConfigBSSID Setting BSSID for "apwifi"-WPA_PSK to any
07-05 21:58:31.994 E/WifiConfigStore(1087): will read network variables netId=0
07-05 21:58:32.023 E/WifiConfigStore(1087): will read network variables netId=0
07-05 21:58:45.132 E/WifiConfigStore(1087): saveWifiConfigBSSID Setting BSSID for "apwifi"-WPA_PSK to any
07-05 21:58:45.141 E/WifiConfigStore(1087): will read network variables netId=0
07-05 21:58:45.150 E/WifiConfigStore(1087): will read network variables netId=0
07-05 21:58:58.285 E/WifiConfigStore(1087): saveWifiConfigBSSID Setting BSSID for "apwifi"-WPA_PSK to any
07-05 21:58:58.290 E/WifiConfigStore(1087): will read network variables netId=0
07-05 21:58:58.298 E/WifiConfigStore(1087): will read network variables netId=0