Help Strange font problem

[funkylogik]

My (custom) system font usualy is applied in apps (tapatalk for example) as normal but all of a sudden, apps are just using the plain stock font while settings menu, statusbar clock etc are still using the custom one.
Anyone came across this?

 

[funkylogik]

Hmm that reboot where you just hold in power button has cured it.
Glad.... that was ugly