I have had the M8 since release and I've always had the issue of no new notification, if I receive a text while the screen is on and I'm still in the current conversation. Example: I'll text someone back, put the phone down without turning the screen off but don't check it unless I hear the notification go off. I'll get a new text but I won't receive a notification (vibrate, ringer or LED).
I've tried 8SMS and Hangouts and the issue is still there. I've tried to search for any solutions but nothing has pointed me to a similar thread (could be keywords I'm using). For now, I try to hit the home button when I'm finished sending my text in hopes I would get the notification.
Can somebody point me to a fix or suggest a fix? I'm rooted and s-off'd but running stock ROM.