I don't know how well you can tell from these pictures but the key-caps on my HHKB classic seem to sit slightly crooked.
I have tried to swap them out with other key-caps and they sit exactly the same crooked way.
Whatever is going on seems to be a problem with the slider. It is driving my ocd through the roof!
Crooked keycaps on HHKB
- LambdaCore
- Location: United States
- Main keyboard: HHKB Professional Classic (currently in rotation)
- Main mouse: Logitech MX518
- Favorite switch: Capacitive Buckling Springs
Try replacing the slider with another one in the board, see if it’s a problem with that.