@Rox, because multi-user (well, actually absence of the KeyguardMultiUserSelectorView layout when multi-user is activated) causes regular exceptions E/KeyguardHostView: can't find user_selector in layout. Here is a research on this.
So, if few or even none of Ace 2 users need it, I will ask you to deactivate it in CM10.2 as a useless and harmful feature.
@Rox, I agree that 'harmful' is kind of a bit too strong term, but on the other hand those exceptions prove that multi-user wasn't fully implemented, so it's hard to estimate where else it could misbehave.
I see the following cons; 1) flooding logcat with E-tagged messages, 2) probability of hidden issues.
I'm trying to find pros but so far there are none of them.
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