Notification light not working?

[anon(464338)]

I just received my 5x and turned on the "pulse notification light" but nothing happens when I get a notification or call. Do I need to disable the ambient display in order for it to work?

 

[tbolt86]

Mine works with ambient on i think it only comes on when screen is off

 

[eaccentsac]

Mine works with ambient on i think it only comes on when screen is off

This!