And you are correct. Just got back from the Genius Bar, they have to replace the entire top case because the R key tends to stick or misfire. 2 week repair because they don't have the parts. Sounds like an expensive repair for a single key.
The person sitting next to me had the exact same issue (but different keys)!
The Butterfly mechanism was tainted by a number of design flaws that forced Apple to provide a soft recall:
https://support.apple.com/keyboard-service-program-for-mac-n...
I'm literally getting my new Macbook serviced today due to sticky butterfly keys.
And you are correct. Just got back from the Genius Bar, they have to replace the entire top case because the R key tends to stick or misfire. 2 week repair because they don't have the parts. Sounds like an expensive repair for a single key.
The person sitting next to me had the exact same issue (but different keys)!