Lock Screen is showing Junk Characters Intermittently, my lock screen will start to display junk characters. A power cycle will clear up the problem but I'd like to know how to keep this from happening again. 




The first time it happened in the afternoon and the second time happened overnight so there's no commonality in usage or behavior or updates that I can see.

Update: I've just tried to change it back to the default font and now it's showing up in my notification bar all over the home screen.
You have to restart to fix it :( not a good answer but I've been having the same issue. It was definitely after upgrading to lolipop. It may come back, usually during charging.