Why such fonts?

[Reeshabh Ranjan]

There are some weird fonts (outlined) appearing over random places in my phone.
In the screenshot, you see the 'Say "Ok Google"'? Why so?

 

[Muessig]

This is a problem that someone over on or sister site www.androidcentral.com would be able to help you with. This is a site that specialises in Windows products.