If you still have time, get your keyboard replaced for free: https://support.apple.com/keyboard-service-program-for-mac-n... (it also means they have to replace your mobo and battery due to brilliant Apple engineering).
It doesn't fix the problem, but it resets the clock until they fall off again. In Texas, it was <48 hours between dropping my Macbook off at the Apple shop and receiving it on my doorstep.
I heard it would take weeks and even had a backup laptop ready, so it surprised me when it came <2 days later. It was my original laptop too (had all my data and the same dent).
Oh well, the new models don't have this issue anymore. What a fuck up.
Can't even get far enough to see if the repair would be covered. Good job Apple
I had the same thing happening to me but Apple changed the complete keyboard under their extended keyboard warranty programm (even though it was out of Apple Care already).