Default Nexus 4 Hangouts App has a weird white bar?

In fullscreen mode, (pie) on PA Rc2, it creates a weird white bar on the top, I'm not sure why :|



Ty
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Nexus 5, 16GB, Black - Unofficial PA 4.1, Faux Kernel @ 2.8GHz Turbo-Boosted

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Retired: ASUS Transformer Pad TF300T, Samsung Galaxy S III, Motorola Xoom Stock Rooted, iPhone 4 JB iOS 5, Nokia N900, Sony Ericsson C902