Works perfectly in UE4.9 thanks a lot for !
Edit: One small thing I noticed, started off using default 3rd person template and copied floor and just moved it up as a roof. With time set at 12 so sun is straight above me South side of building has light leaking in top corner all way across.
Screenshot to show what I am talking about: http://i.imgur.com/N0Bzikf.png
As I walk toward that wall light will eventually disappear but when I back up away from wall light comes back.