Why aren't I getting sound notifications on my GoSms Pro / Handcent apps (KitKat 4.4)?

[Gera Biberstein]

No notification sound in GoSms Pro / Handcent apps (KitKat 4.4)

Hello!

Does anyone familiar with a "no notification sound" problem problem for SMS apps when notification sound is set inside the app (Notification Settings) and the device is not muted, not in blocked mode, sound level is not zero, "show notifications" is checked for the app, and yet NO SOUND is heard when receiving messages, even in the notification settings test in the app ?

The above is true to both Go Sms Pro and Handcent apps, same after uninstalling and reinstalling.

Did someone encounter this problem?

Device Info:
Galaxy S2 GT-I9100
CM11 ROM (KitKat 4.4.4)

Thanks.
Jerry