Default Problem with statusbar

Hello guys, I dont know why but like 10 after every reboot my status bar stops showing things but keeps working, this happened (I'm not sure that this is the cause) after installing and unistalling this application, I wanted to try how it works, when I pull down my status bar I can tap notification but i cant see it, I just see homescreen like I haven't pulled down. I'm actually on status bar but it didnt show nothing
Phone: Sony Xperia Z - C6603 | Kernel: Stock| ROM: Stock 4.4