Latest update auto close wifi connection when phone idling

Actually I’m not sure who turn it off but you’re right that the wifi was turned off when the phone is inactive or idling. When I turned it back on or woke it up the phone connected to WiFi again. Occasionally i can see wifi disconnected when using the phone. More like wifi status shown as connected but cannot use internet. Turned off WiFi and use mobile data instead and it’s not working also. Seen this issue when I first downloaded this app on my phone but I found the problem by providing access to background data or enable blokada to still continue to connect to the internet when the phone is idle. That solve the problem. The latest version see similar issue and whatever that can be done I have allowed it like setting system not gonna kill this app forever. So because nothing much can be done from my side, I have revert to previous version. Now it’s working perfectly fine. I hope I have explained it clear enough. Do you know what went wrong?