STEPS LEADING TO THE PROBLEM:
1. Open and swipe down to close apps 10-30 times in a period of a few minutes to a few hours.
2. Try swipe down to close a basic app like Contacts, Web, Calls, E-mails or Facebook
The app should close when swiped down.
The app does not close. Instead it functions similarly as when swiped right or left, so it allows the app to run on the background.
FREQUENCY OF OCCURRENCE:
Every time when used the phone for a couple of hours and already succesfully closed over 30 apps.
I even got the phone in a state where neither ways of swiping did close an app (clock). I was using the phone in right hand and I was lying on my back. If I changed position of the phone slightly, closing by swiping worked. I hope this irritating bug will be fixed as soon as possible. I am considering returning my phone since it does not work as supposed.