[Q] Status bar icons hidden on lockscreen topic

First post here, I hope you don't mind...

Model: SM-G900F
Android Version: 5.0
No root, everything is by default

Since the lollipop update I'm having trouble with the icons in the status bar .
As you can see in the attached file, the icons are all visible when unlocked, but on lockscreen the icons on the left are hidden.

The name of my carrier (mobistar) used to be in the left bottom corner... Any idea how I can fix this?

i.imgur.com/HsipnTZ.jpg (Sorry, can't post full links yet.)

Attached Thumbnails