Nope, not normal. Exit the app (double-click home button) and swipe up the camera app.
Then restart your iphone.
Got the same problem with my ip5s and wall paper, iBook seems like fallen apart. Did a backup and restore.
Mine seems to be working normal.
I'll assume your device is jailbroken, and if it indeed is, this is likely a known issue related to the current iOS7 jailbreak and Cydia. If you are really bothered by it, consider installing a tweak; else this issue might be fixed sometimes soon, hopefully.
Btw, sbsettings doesn't work properly, yet, on 64-bit devices, it seems.
apparently, i uninstalled sbsettings but problem still exist. what tweak can i install?
Is it iPhone 4? I dont have the issue with iphone 5
StatusBarFix2
Up to you to examine and determine the tweak's pros and cons, and if this will indeed fix the issue you are facing.