Shape of sessile drop

Hello,

I am trying to model the equilibrium shape of a sessile water drop in comsol. I have used a 2D axisymmetric laminar two phase, phase field model for the same. I started off with the shape of drop as a quarter circle in the model. I ran the model for 0.3 seconds, and the movement of the interface was fine till around 0.1 seconds. But once the contact angle reached the given value, the size of the drop started decreasing and by the end it vanished completely.

Can someone please help me out with this?

Thanks and Regards,
Prashant