Ambient Display Not Showing All Notifications

[ryancl25]

I'm on Android N Beta with my Nexus 6P. Ambient Display is showing up when notifications for some apps come in, but not all of them. Specifically it's not working for me with Gmail and Hangouts. The notifications are there waiting when I turn on my screen. Some apps however do work, such as Google Messenger and Youtube notifications. Is anyone else seeing this?

 

[anon(9072051)]

Are all of the apps set to override Do Not Disturb with notifications if you can't set an importance level for them?

 

[ryancl25]

None of the apps have override enabled, but I do not have Do Not Disturb enabled.

 

[ryancl25]

Well I figured this one out. I had both Gmail and Hangouts set for silent as the sound for notifications, within each app's settings. If I choose an actual sound for notifications then ambient display works fine. I'm not sure if this a bug or by design. It is frustrating to me though because I want to see the ambient display notifications for these apps, but particularly do not want a sound coming in whenever I get an email. I also noticed that when no sound is selected the LED notification light does not come on for these apps either, but it does with a sound selected.