Why is there an invisible space/icon on the top bar of my android phone?

[kakenx]

On the top left of the bar where app icons appear (messages, missed calls, active apps, etc) there seems to be a blank space/invisible icon? I'm not sure what caused this. Anyone have any useful details about this?

Here's a screenshot: http://imgur.com/a/SWidi

 

[B. Diddy]

Welcome to Android Central! I've seen app notifications that are solid white squares, as if they forgot to create a notification icon, or that particular aspect of the app is buggy. I've never seen it be completely blank, but it could still be due to a buggy app notification. If you swipe down the notification panel, does it seem to correspond to anything?

 

[kakenx]

Oh thanks! It belongs to a Flashlight app seems like. This wasn't happening before with the app, but I've uninstalled it and it has become normal again.