BUG WATCH: NFC is fairly broken in +Android 4.4 Kit Kat on the +Nexus 7 2013.

Can folks with other devices on Kit Kat give this a try? I'm curious if it's limited to just the Nexus 7. The only way I've found to get it to work is to toggle Airplane Mode, but then I only have maybe 30 seconds before NFC stops working.
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