SplitViewController not displaying unfold animation

I'm using a 2 column SplitViewController, with

preferredDisplayMode = .oneBesideSecondary

Running it on the duo simulator in device hub, everything works, but i'm not seeing that cool animation when it unfolds, that the inner screen already has the content open. Opening it, the screen goes black, and then the fullsized splitview appears. Close it, screen goes black, and it reverts to showing the only the master.

Is this a limitation of the simulator or an issue with the setup? Its hard to tell due to the limited apps installed on the new simulator

SplitViewController not displaying unfold animation
 
 
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