The only way I've been able to semi-fix the issue is to have me notifications go through me emails. Only down fall is your bombarded by bs Facebook notifications that I don't care about.
Posted via Android Central App
I have the same issue on my Galaxy S4, I can't find a fix either. I'll get notifications for candy crush from the Facebook app, but that is it. I will randomly get them for comments and requests.
Posted via Android Central App