No, I mean just the screen being black. It's super annoying as it happens so much easier than pressing power button. Combined with the fact that if screen "time outs" while in app, it opens back to the app... dem pocketspams with mitäkuuluu

E: seems like a bug. it does not happen if you close the screen while in lockscreen, but if youre in app, appdrawer or events, it will open with volume button.