Sony Z3 compact missing roll down bar in status bar. It only show under horizontal screen

[AC Question]

I have a Sony Z3 compact, after upgrade to 6.0, the roll down bar on status bar don't show, but jump into Suggestions apps. The bar only roll down when I am in horizontal screen. I can't turn on wifi, flash, but have to go into setting all time. How can I fix it? Seems like it doesn't even touch it under vertical screen.