Correction: I'm wrong now data is imported
In fact I have 2 fake FB profile for testing purpose with your component... Until now I make all my test using a FB account where gender was not specified in my FB profile. I make right now another test with my other FB account and gender is now successfully imported in CB...
The only thing I can't explain is why one of my fake FB profile had not his gender specified... Normally when creating a new FB account, gender data is a mandatory field... Very strange...