Select Network - Turn On Wifi - Should allow you to select already connected network
When trying to connect to Wifi if you happen to enter "Select Network" popup when the wifi is disconnected then select the prompted "Turn on WiFi" the list is populated with the available WiFi networks and if you are set to automatically connect to any of the networks then that one will be shown as connected, but it will not be possible to click on that network, instead you have to click on "cancel".
You should just be able to click on the currently active network as well to dismiss the popup, that way what you actually click matches your expectations of what you wanted to achieve.