Yes I still have the notification bar.
When my screen is locked, all the notification bar shows me is my network provider, battery %, wifi, bluetooth etc. It no longer shows me if I have an email, whatsapp or text message.
When my screen is unlocked, again the notification bar does no longer show a new message arrival.... However, they do appear 'sometimes' when I have wifi connection.
I have checked Gmail set-up and it says I should be getting notifications upon arrival...but it is not happening.
I have also checked that my mobile data is on - it is and works fine.