As You can see in the picture the icons of my indicator area (bq E4.5) flew out of the screen of my phone. No matter whether in vertical or horizontal position, the upper parts of the icons are cut off.
How it happened:
I went for a run with Music Player on and screen rotation unlocked. As it's not possible to control the music player with locked screen I set the locking time on 5 minutes. As we run we hold a phone in a hand at ~45 degree. That means the screen rotated several times during the first hour of my run. Then after 50-60 minutes music player crashed and left indicators in this strange position. I couldn't turn the music player on again. It tried to launch and then after several seconds crashed over and over again. I have about 4GB of music files on my phone. I thought myself that perhaps there may be a problem with the memory so I opened a music folder with the File Manager and opened one mp3 file. It took the Player some time but it eventually launched and started to play. After that I closed it and reopened which succeded and started to play my 4GB long queue using shuffle. Indicator area stayed however in the position from the photo.
An update:
After a few days of using the phone, notification area repaired itself without rebooting.