Lock Screen #'s show up as boxes

[AC Question]

When I lock my screen and then I hit the power button to show my lock screen the numbers on the number pad to unlock my screen show up as boxes, all the numbers are covered by white boxes and it's been happening a lot and it's starting to work it's way throughout my whole phone. It goes away by restarting the phone but I don't want to restart my phone all the time. This is in lollipop.

 

[Golfdriver97]

Welcome to the forums. What device do you have?

 

[Timmy Turnner]

It's a Galaxy s5 from Verizon