Can't Set The Background Of The Lockscreen?

[Archolm]

Hello all, i'm on the latest weekly but somehow since getting this awesome device I have been unable to set the background for the lockscreen. Is this a know bug or does anyone know how to fix it? Using a 3S

 

[MIUInewbie]

If you are using a third party launcher (action laumcher, go launcher, niva launcher,...) try using miui launcher