I too have found this keyboard it to be a disaster. I made the mistake of buying two MacBooks as soon as the first 12" model was released, one for me and one for my wife, and my wife's keyboard had so many problems we took it in to Apple. All they could do was offered to swap out the keyboard for a mere $400. My wife refused, and the problem mysteriously solved itself.
Meanwhile, mine "works", but the short key travel makes touch typing next to impossible even after two years of use. I have just purchased an inexpensive windows computer from a Lenovo and I'm trying to get accustomed to Windows 10 so I have a workable keyboard. This is a big deal because I am deep into Apples ecosystem and lock-in.
I do not want to switch but I type all day and I can't bear to buy another Macintosh because the keywords have all gone this way. I am however considering purchasing a new old stock MacBook Air.
FWIW, I've had intermittent problems with one or the other key on the MBP keyboard, but as you said, after a while they went away. Maybe I ground down that damn speck of dust.
Meanwhile, mine "works", but the short key travel makes touch typing next to impossible even after two years of use. I have just purchased an inexpensive windows computer from a Lenovo and I'm trying to get accustomed to Windows 10 so I have a workable keyboard. This is a big deal because I am deep into Apples ecosystem and lock-in.
I do not want to switch but I type all day and I can't bear to buy another Macintosh because the keywords have all gone this way. I am however considering purchasing a new old stock MacBook Air.