Left and right keys on Fenix 6

Hi, it's two months now I wear my Fenix 6 and recently I notice that the three left button looks "softer" than the two on the right.

These latter have a robust "click" and looks solid vs the left ones, which "click" is almost unpercettible.

Not sure it is my impression or it's always been like this, can't remeber how they were when I wore it first time.

What's your impression ?

Thanks

Gianni