3rd-party lock screens never turn off by themselves?

[AC Question]

I'm using Samsung Galaxy A3 (2017 version).

I've noticed that when I use an external lock-screen app from google play, the lock-screen never turns off once you turn it on.

For example, I'm currently using Snaplock. Whenever I get a notification, the screen turns on.....and it stays on. It's not like Samsung's default lock screen where once the lock-screen turns on, it turns off again after a few seconds. With snaplock, the screen just stays on. It's pretty inconvenient since this depletes battery life. I checked the properties in the Snaplock app but I couldn't find anything that can disable this. Every time the screen turns on, I have to manually turn it off by pressing the power button.

I've encountered the same issue with ZUI Locker in my previous device.

 

[belodion]

Have you emailed the developer about it?

 

[project saviour]

Have you emailed the developer about it?

I tried. But the developer email address stated in Snaplock's page in Google Play doesn't even exist.