Another HTC 8S build quality issue

After issues with the soft coating, now the back, start and search buttons remain permanently lit, even when the screen is locked.

I've tried rebooting and resetting the handset and previous to that changing the screen brightness from high to auto and to medium and low.

So whilst this looks cool, it's annoying and will probably lower my battery life. Besides, this isn't normal.

HTC, you continue to astound me.