New navbar feature (BUG)

Hello,

I was very happy to see that the new navbar feature was released but I'm sorry to say I'm really disappointed. There's a bug and links can't be deleted nor edited, you can't save any change once you created your first navbar (at least that is what happened to me). I can't understant how a feature like this is released without any testing (or a better one) and what's even worse, it's been a few days since the bug was discovered but not solved. 

Can you say when it will be 100% available?

Thanks,

Daniel