So i just took my phone out from the case for cleaning and found that the top right corner has a crack, the phone has not been dropped since last 3 months. there is no crack on the screen as well. Google says that there is no warranty that covers this and it will go into repair.
My power button failed and they will not warranty because of this same crack being present with no other damage. I have to pay $130 to replace it at a Google repair partner and then they did say that they would warranty the power button issue. With that said, it makes me feel they are more than aware of the issue as the repair partner has multiple back covers in stock.