Shallow buttons

Hi,

Middle button has clear keystroke in my Venu 3.

But top and bottom buttons are more shallow for pressing.

It seems that insides are meant to fit Venu 3s and there are few tenths of millimeter missing for buttons in bigger diameter of Venu 3.

I tried to draw it in a simplest way:

This is quite inconvenient for using and I found myself avoiding to press them as much as possible 

Has anyone the same feeling?