That's disappointing to here stanontour, I was hoping too they would have learned their lesson. The airport in general at Abu Dhabi including the business class lounge are the weak point of the J experience imho.
Perhaps I'm in a minority but adequate clean toilet facilities at an airport are something that can sway my decision over which airline to fly, regardless of the class I'm flying. I stopped flying with Emirates in economy (old Dubai terminal) because the 3-4 hour layover was such a horrible experience.