I gave my macbookpro for service and i will be getting it back in 2 or 3 days. Then i will post more information. @ Johan Lindqvist : This issue exist since they launch the new macbookpro 2016. https://www.reddit.com/r/apple/comments/...
I am exactly having same issue with 'b' key for past 2days. I am using macbbookpro 15'inch with touch bar. I took phone support and they asked me to perform some test like nvram.. etc Then he said it might bbbe hardware issue.. Asked me to take to service centre. P.S: While I type my reply here.. few double entry came. I didn't correct it purposefully.