AVSampleBufferDisplayLayer in a Notification Content Extension

I wasn't sure if this quesiton belonged in this forum or the Push Notification forum so feel free to delete. I'm trying to use AVSampleBufferDisplayLayer in a Notification Content Extension. It works perfectly while the device is unlocked. However, if I try to open the notification while the device is locked, the frames don't show up. If i put my finger on Touch ID to unlock the phone, I briefly see some frames before the notification is dismissed. The status isn't AVQueuedSampleBufferRenderingStatusFailed. Is it expected for AVSampleBufferDisplayLayer to block frames while the device is locked?