Yamaha CLP-685 GrandTouch keys

by Giulia
(Italy)

I bought a CLP 685 last year, and I’m happy with it. But my thumbs and little fingers hurt a bit while playing wide chords and some fast passages. That’s because the edges of the white keys are not perfectly smooth, especially the corners. Indeed, they are slightly rough and sharp.
I can’t get used to that!Are my fingers too delicate?
The seller claimed all Yamaha piano keyboards are made that way, and that’s not a flaw.
Did anyone notice the same?
Thanks in advance for your help