Picture in Picture O developer preview

Hi guys,

Everyone enjoying the O developer preview? I'm loving the look of it.

Can't seem to get the picture in picture feature working though. Has anyone tried this a s got.it working?

I go into YouTube and start a video playing but when I press the Home button it just takes me home and pauses the video.

Is there a setting I need to turn on somewhere?

Thanks in advance for your help.